./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0214.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0214.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0 --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 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 --- 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-e04fb08 [2022-11-16 19:29:29,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:29:29,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:29:29,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:29:29,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:29:29,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:29:29,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:29:29,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:29:29,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:29:29,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:29:29,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:29:29,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:29:29,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:29:29,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:29:29,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:29:29,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:29:29,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:29:29,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:29:29,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:29:29,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:29:29,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:29:29,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:29:29,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:29:29,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:29:30,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:29:30,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:29:30,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:29:30,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:29:30,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:29:30,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:29:30,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:29:30,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:29:30,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:29:30,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:29:30,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:29:30,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:29:30,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:29:30,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:29:30,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:29:30,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:29:30,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:29:30,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 19:29:30,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:29:30,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:29:30,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:29:30,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:29:30,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:29:30,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:29:30,058 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:29:30,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:29:30,059 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:29:30,059 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:29:30,060 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:29:30,060 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:29:30,060 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:29:30,061 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:29:30,061 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:29:30,061 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:29:30,061 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:29:30,061 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:29:30,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 19:29:30,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 19:29:30,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:29:30,063 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:29:30,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:29:30,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:29:30,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:29:30,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:29:30,064 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 19:29:30,064 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 19:29:30,064 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 19:29:30,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:29:30,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:29:30,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:29:30,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:29:30,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:29:30,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:29:30,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:30,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:29:30,066 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:29:30,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:29:30,067 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:29:30,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:29:30,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:29:30,067 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_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 [2022-11-16 19:29:30,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:29:30,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:29:30,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:29:30,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:29:30,418 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:29:30,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/memsafety/test-0214.i [2022-11-16 19:29:30,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/data/164776565/e11249baba82442c92b4af9c0bf62825/FLAGae1770e4e [2022-11-16 19:29:31,129 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:29:31,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/sv-benchmarks/c/memsafety/test-0214.i [2022-11-16 19:29:31,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/data/164776565/e11249baba82442c92b4af9c0bf62825/FLAGae1770e4e [2022-11-16 19:29:31,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/data/164776565/e11249baba82442c92b4af9c0bf62825 [2022-11-16 19:29:31,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:29:31,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:29:31,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:31,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:29:31,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:29:31,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:31" (1/1) ... [2022-11-16 19:29:31,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf7ddcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:31, skipping insertion in model container [2022-11-16 19:29:31,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:31" (1/1) ... [2022-11-16 19:29:31,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:29:31,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:29:31,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:31,895 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:29:31,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:32,022 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:29:32,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32 WrapperNode [2022-11-16 19:29:32,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:32,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:32,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:29:32,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:29:32,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,108 INFO L138 Inliner]: procedures = 181, calls = 42, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 173 [2022-11-16 19:29:32,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:32,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:29:32,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:29:32,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:29:32,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,167 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:29:32,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:29:32,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:29:32,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:29:32,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (1/1) ... [2022-11-16 19:29:32,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:29:32,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:29:32,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:29:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2022-11-16 19:29:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2022-11-16 19:29:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:29:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:29:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:29:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:29:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:29:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:29:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:29:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:29:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:29:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:29:32,420 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:29:32,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:29:32,999 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:29:33,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:29:33,103 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 19:29:33,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:33 BoogieIcfgContainer [2022-11-16 19:29:33,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:29:33,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:29:33,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:29:33,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:29:33,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:29:31" (1/3) ... [2022-11-16 19:29:33,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bef84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:33, skipping insertion in model container [2022-11-16 19:29:33,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:32" (2/3) ... [2022-11-16 19:29:33,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bef84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:33, skipping insertion in model container [2022-11-16 19:29:33,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:33" (3/3) ... [2022-11-16 19:29:33,117 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0214.i [2022-11-16 19:29:33,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:29:33,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2022-11-16 19:29:33,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:29:33,232 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;@612a4ed1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:29:33,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-16 19:29:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 116 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:29:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:29:33,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:33,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:29:33,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 8605597, now seen corresponding path program 1 times [2022-11-16 19:29:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:33,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331834995] [2022-11-16 19:29:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:33,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:33,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:33,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331834995] [2022-11-16 19:29:33,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331834995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:33,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:33,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:29:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109157042] [2022-11-16 19:29:33,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:33,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:29:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:33,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:29:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:29:33,495 INFO L87 Difference]: Start difference. First operand has 120 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 116 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:33,588 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2022-11-16 19:29:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:29:33,591 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 19:29:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:33,600 INFO L225 Difference]: With dead ends: 120 [2022-11-16 19:29:33,601 INFO L226 Difference]: Without dead ends: 119 [2022-11-16 19:29:33,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:29:33,607 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:33,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:29:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-16 19:29:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-16 19:29:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 59 states have (on average 2.135593220338983) internal successors, (126), 115 states have internal predecessors, (126), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:29:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2022-11-16 19:29:33,674 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 4 [2022-11-16 19:29:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:33,674 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2022-11-16 19:29:33,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2022-11-16 19:29:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 19:29:33,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:33,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 19:29:33,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:29:33,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:33,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash 260844072, now seen corresponding path program 1 times [2022-11-16 19:29:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:33,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628798262] [2022-11-16 19:29:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:33,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:33,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628798262] [2022-11-16 19:29:33,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628798262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:33,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:33,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 19:29:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823529257] [2022-11-16 19:29:33,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:33,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:29:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:29:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:29:33,860 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:34,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:34,064 INFO L93 Difference]: Finished difference Result 231 states and 252 transitions. [2022-11-16 19:29:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:29:34,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 19:29:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:34,067 INFO L225 Difference]: With dead ends: 231 [2022-11-16 19:29:34,067 INFO L226 Difference]: Without dead ends: 231 [2022-11-16 19:29:34,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:29:34,069 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 114 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:34,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 138 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-16 19:29:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 154. [2022-11-16 19:29:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 91 states have (on average 2.098901098901099) internal successors, (191), 147 states have internal predecessors, (191), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:29:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2022-11-16 19:29:34,084 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 5 [2022-11-16 19:29:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:34,085 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2022-11-16 19:29:34,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2022-11-16 19:29:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 19:29:34,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:34,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 19:29:34,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:29:34,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash 260844073, now seen corresponding path program 1 times [2022-11-16 19:29:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:34,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923426350] [2022-11-16 19:29:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:34,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:34,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923426350] [2022-11-16 19:29:34,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923426350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:34,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:34,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:29:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293332665] [2022-11-16 19:29:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:34,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:29:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:29:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:29:34,380 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:34,667 INFO L93 Difference]: Finished difference Result 260 states and 325 transitions. [2022-11-16 19:29:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:29:34,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 19:29:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:34,669 INFO L225 Difference]: With dead ends: 260 [2022-11-16 19:29:34,669 INFO L226 Difference]: Without dead ends: 260 [2022-11-16 19:29:34,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:34,671 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 104 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:34,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 245 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-16 19:29:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 212. [2022-11-16 19:29:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 143 states have (on average 2.020979020979021) internal successors, (289), 201 states have internal predecessors, (289), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:29:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 305 transitions. [2022-11-16 19:29:34,685 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 305 transitions. Word has length 5 [2022-11-16 19:29:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:34,686 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 305 transitions. [2022-11-16 19:29:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 305 transitions. [2022-11-16 19:29:34,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:29:34,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:34,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:34,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:29:34,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:34,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1563090861, now seen corresponding path program 1 times [2022-11-16 19:29:34,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:34,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719278391] [2022-11-16 19:29:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:34,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:35,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719278391] [2022-11-16 19:29:35,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719278391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:35,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:35,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:29:35,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151742874] [2022-11-16 19:29:35,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:35,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:29:35,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:35,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:29:35,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:35,206 INFO L87 Difference]: Start difference. First operand 212 states and 305 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:35,525 INFO L93 Difference]: Finished difference Result 288 states and 392 transitions. [2022-11-16 19:29:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:29:35,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-16 19:29:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:35,529 INFO L225 Difference]: With dead ends: 288 [2022-11-16 19:29:35,529 INFO L226 Difference]: Without dead ends: 288 [2022-11-16 19:29:35,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:29:35,530 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 81 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:35,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 390 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-16 19:29:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 245. [2022-11-16 19:29:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 173 states have (on average 1.9942196531791907) internal successors, (345), 232 states have internal predecessors, (345), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 365 transitions. [2022-11-16 19:29:35,545 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 365 transitions. Word has length 7 [2022-11-16 19:29:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:35,546 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 365 transitions. [2022-11-16 19:29:35,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 365 transitions. [2022-11-16 19:29:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:29:35,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:35,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:35,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:29:35,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1563092115, now seen corresponding path program 1 times [2022-11-16 19:29:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:35,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82921661] [2022-11-16 19:29:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:35,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:35,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:35,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82921661] [2022-11-16 19:29:35,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82921661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:35,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:35,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 19:29:35,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455683048] [2022-11-16 19:29:35,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:35,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:29:35,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:35,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:29:35,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:29:35,577 INFO L87 Difference]: Start difference. First operand 245 states and 365 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:35,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:35,718 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2022-11-16 19:29:35,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:29:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-16 19:29:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:35,724 INFO L225 Difference]: With dead ends: 295 [2022-11-16 19:29:35,724 INFO L226 Difference]: Without dead ends: 291 [2022-11-16 19:29:35,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:29:35,729 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 61 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:35,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 163 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:29:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-16 19:29:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 243. [2022-11-16 19:29:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 171 states have (on average 2.0) internal successors, (342), 230 states have internal predecessors, (342), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 362 transitions. [2022-11-16 19:29:35,753 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 362 transitions. Word has length 7 [2022-11-16 19:29:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:35,753 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 362 transitions. [2022-11-16 19:29:35,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 362 transitions. [2022-11-16 19:29:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:29:35,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:35,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:35,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:29:35,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash -325715168, now seen corresponding path program 1 times [2022-11-16 19:29:35,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:35,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919807691] [2022-11-16 19:29:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:35,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:35,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:35,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919807691] [2022-11-16 19:29:35,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919807691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:35,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:35,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:29:35,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049295820] [2022-11-16 19:29:35,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:35,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:29:35,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:35,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:29:35,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:29:35,819 INFO L87 Difference]: Start difference. First operand 243 states and 362 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:36,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:36,121 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2022-11-16 19:29:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:29:36,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-16 19:29:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:36,123 INFO L225 Difference]: With dead ends: 359 [2022-11-16 19:29:36,123 INFO L226 Difference]: Without dead ends: 359 [2022-11-16 19:29:36,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:36,124 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 212 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:36,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 235 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:29:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-16 19:29:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 243. [2022-11-16 19:29:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 171 states have (on average 1.9649122807017543) internal successors, (336), 230 states have internal predecessors, (336), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 356 transitions. [2022-11-16 19:29:36,137 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 356 transitions. Word has length 10 [2022-11-16 19:29:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:36,137 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 356 transitions. [2022-11-16 19:29:36,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 356 transitions. [2022-11-16 19:29:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:29:36,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:36,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:36,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:29:36,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -325715167, now seen corresponding path program 1 times [2022-11-16 19:29:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:36,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227507617] [2022-11-16 19:29:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:36,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227507617] [2022-11-16 19:29:36,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227507617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:36,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:36,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:29:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473222979] [2022-11-16 19:29:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:36,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:29:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:29:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:36,452 INFO L87 Difference]: Start difference. First operand 243 states and 356 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:37,069 INFO L93 Difference]: Finished difference Result 434 states and 556 transitions. [2022-11-16 19:29:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 19:29:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-16 19:29:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:37,072 INFO L225 Difference]: With dead ends: 434 [2022-11-16 19:29:37,072 INFO L226 Difference]: Without dead ends: 434 [2022-11-16 19:29:37,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:29:37,073 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 207 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:37,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 526 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:29:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-16 19:29:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 261. [2022-11-16 19:29:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 189 states have (on average 1.9788359788359788) internal successors, (374), 246 states have internal predecessors, (374), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2022-11-16 19:29:37,086 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 10 [2022-11-16 19:29:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:37,086 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2022-11-16 19:29:37,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2022-11-16 19:29:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:29:37,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:37,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:37,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:29:37,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1507228028, now seen corresponding path program 1 times [2022-11-16 19:29:37,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:37,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426907231] [2022-11-16 19:29:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:37,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:37,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426907231] [2022-11-16 19:29:37,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426907231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:37,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:37,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:29:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759592954] [2022-11-16 19:29:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:29:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:29:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:29:37,158 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:37,307 INFO L93 Difference]: Finished difference Result 337 states and 469 transitions. [2022-11-16 19:29:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:29:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-16 19:29:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:37,309 INFO L225 Difference]: With dead ends: 337 [2022-11-16 19:29:37,309 INFO L226 Difference]: Without dead ends: 337 [2022-11-16 19:29:37,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:29:37,310 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 110 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:37,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 186 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:29:37,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-16 19:29:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 258. [2022-11-16 19:29:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 189 states have (on average 1.9153439153439153) internal successors, (362), 243 states have internal predecessors, (362), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 382 transitions. [2022-11-16 19:29:37,320 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 382 transitions. Word has length 11 [2022-11-16 19:29:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:37,320 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 382 transitions. [2022-11-16 19:29:37,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 382 transitions. [2022-11-16 19:29:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:29:37,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:37,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:37,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 19:29:37,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1507228027, now seen corresponding path program 1 times [2022-11-16 19:29:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:37,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486582829] [2022-11-16 19:29:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:37,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:37,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486582829] [2022-11-16 19:29:37,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486582829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:37,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:37,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:29:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557406826] [2022-11-16 19:29:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:37,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:29:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:29:37,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:37,592 INFO L87 Difference]: Start difference. First operand 258 states and 382 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:37,962 INFO L93 Difference]: Finished difference Result 299 states and 386 transitions. [2022-11-16 19:29:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:29:37,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-16 19:29:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:37,964 INFO L225 Difference]: With dead ends: 299 [2022-11-16 19:29:37,964 INFO L226 Difference]: Without dead ends: 299 [2022-11-16 19:29:37,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:29:37,965 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 269 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:37,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 513 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:29:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-16 19:29:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 256. [2022-11-16 19:29:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 189 states have (on average 1.873015873015873) internal successors, (354), 241 states have internal predecessors, (354), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 374 transitions. [2022-11-16 19:29:37,973 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 374 transitions. Word has length 11 [2022-11-16 19:29:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:37,973 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 374 transitions. [2022-11-16 19:29:37,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 374 transitions. [2022-11-16 19:29:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 19:29:37,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:37,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:37,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 19:29:37,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1565765343, now seen corresponding path program 1 times [2022-11-16 19:29:37,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544107722] [2022-11-16 19:29:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:37,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:38,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:38,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544107722] [2022-11-16 19:29:38,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544107722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:38,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:38,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:29:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752472425] [2022-11-16 19:29:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:38,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:29:38,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:29:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:29:38,026 INFO L87 Difference]: Start difference. First operand 256 states and 374 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:38,290 INFO L93 Difference]: Finished difference Result 403 states and 545 transitions. [2022-11-16 19:29:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:29:38,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 19:29:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:38,294 INFO L225 Difference]: With dead ends: 403 [2022-11-16 19:29:38,294 INFO L226 Difference]: Without dead ends: 403 [2022-11-16 19:29:38,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:38,295 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 194 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:38,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 229 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-16 19:29:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 262. [2022-11-16 19:29:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.8461538461538463) internal successors, (360), 247 states have internal predecessors, (360), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 380 transitions. [2022-11-16 19:29:38,305 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 380 transitions. Word has length 12 [2022-11-16 19:29:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:38,305 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 380 transitions. [2022-11-16 19:29:38,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 380 transitions. [2022-11-16 19:29:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 19:29:38,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:38,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:38,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 19:29:38,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:38,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:38,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1565765342, now seen corresponding path program 1 times [2022-11-16 19:29:38,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:38,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100324402] [2022-11-16 19:29:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:38,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:38,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:38,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100324402] [2022-11-16 19:29:38,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100324402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:38,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:38,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:29:38,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387075433] [2022-11-16 19:29:38,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:38,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:29:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:29:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:29:38,418 INFO L87 Difference]: Start difference. First operand 262 states and 380 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:38,700 INFO L93 Difference]: Finished difference Result 313 states and 398 transitions. [2022-11-16 19:29:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:29:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 19:29:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:38,703 INFO L225 Difference]: With dead ends: 313 [2022-11-16 19:29:38,703 INFO L226 Difference]: Without dead ends: 313 [2022-11-16 19:29:38,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:38,704 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 164 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:38,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 245 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:38,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-16 19:29:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 262. [2022-11-16 19:29:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.8) internal successors, (351), 247 states have internal predecessors, (351), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 371 transitions. [2022-11-16 19:29:38,714 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 371 transitions. Word has length 12 [2022-11-16 19:29:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:38,714 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 371 transitions. [2022-11-16 19:29:38,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 371 transitions. [2022-11-16 19:29:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 19:29:38,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:38,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:38,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 19:29:38,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash 520571416, now seen corresponding path program 1 times [2022-11-16 19:29:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:38,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794207632] [2022-11-16 19:29:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:38,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:39,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:39,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794207632] [2022-11-16 19:29:39,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794207632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:39,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:39,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:29:39,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742787588] [2022-11-16 19:29:39,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:39,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:29:39,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:39,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:29:39,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:39,048 INFO L87 Difference]: Start difference. First operand 262 states and 371 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:39,393 INFO L93 Difference]: Finished difference Result 301 states and 379 transitions. [2022-11-16 19:29:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:29:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 19:29:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:39,395 INFO L225 Difference]: With dead ends: 301 [2022-11-16 19:29:39,395 INFO L226 Difference]: Without dead ends: 301 [2022-11-16 19:29:39,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:29:39,396 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 265 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:39,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 506 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-16 19:29:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 261. [2022-11-16 19:29:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 195 states have (on average 1.7794871794871794) internal successors, (347), 246 states have internal predecessors, (347), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 367 transitions. [2022-11-16 19:29:39,403 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 367 transitions. Word has length 12 [2022-11-16 19:29:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:39,403 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 367 transitions. [2022-11-16 19:29:39,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 367 transitions. [2022-11-16 19:29:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 19:29:39,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:39,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:39,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 19:29:39,404 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:39,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash -783664213, now seen corresponding path program 1 times [2022-11-16 19:29:39,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:39,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267146085] [2022-11-16 19:29:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:39,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:39,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:39,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267146085] [2022-11-16 19:29:39,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267146085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:39,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:39,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 19:29:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141575100] [2022-11-16 19:29:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:39,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:29:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:29:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:29:39,915 INFO L87 Difference]: Start difference. First operand 261 states and 367 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:40,519 INFO L93 Difference]: Finished difference Result 433 states and 551 transitions. [2022-11-16 19:29:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:29:40,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-16 19:29:40,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:40,521 INFO L225 Difference]: With dead ends: 433 [2022-11-16 19:29:40,521 INFO L226 Difference]: Without dead ends: 433 [2022-11-16 19:29:40,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:29:40,522 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 179 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:40,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 819 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:29:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-16 19:29:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 266. [2022-11-16 19:29:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 200 states have (on average 1.75) internal successors, (350), 250 states have internal predecessors, (350), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2022-11-16 19:29:40,529 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 15 [2022-11-16 19:29:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:40,530 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2022-11-16 19:29:40,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2022-11-16 19:29:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 19:29:40,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:40,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:40,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 19:29:40,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash -340494935, now seen corresponding path program 1 times [2022-11-16 19:29:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:40,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270088922] [2022-11-16 19:29:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:40,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:40,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270088922] [2022-11-16 19:29:40,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270088922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:40,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:40,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 19:29:40,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464814644] [2022-11-16 19:29:40,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:40,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:29:40,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:29:40,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:29:40,849 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:41,318 INFO L93 Difference]: Finished difference Result 418 states and 542 transitions. [2022-11-16 19:29:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:29:41,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-16 19:29:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:41,321 INFO L225 Difference]: With dead ends: 418 [2022-11-16 19:29:41,321 INFO L226 Difference]: Without dead ends: 416 [2022-11-16 19:29:41,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:29:41,322 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 294 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:41,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 521 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:29:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-16 19:29:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 260. [2022-11-16 19:29:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 194 states have (on average 1.7474226804123711) internal successors, (339), 244 states have internal predecessors, (339), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 359 transitions. [2022-11-16 19:29:41,330 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 359 transitions. Word has length 16 [2022-11-16 19:29:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:41,330 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 359 transitions. [2022-11-16 19:29:41,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 359 transitions. [2022-11-16 19:29:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:29:41,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:41,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:41,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 19:29:41,332 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:41,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1965046476, now seen corresponding path program 1 times [2022-11-16 19:29:41,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:41,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152055880] [2022-11-16 19:29:41,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:41,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:41,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:41,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152055880] [2022-11-16 19:29:41,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152055880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:41,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:41,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:29:41,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238383180] [2022-11-16 19:29:41,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:41,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:29:41,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:41,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:29:41,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:29:41,388 INFO L87 Difference]: Start difference. First operand 260 states and 359 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:41,642 INFO L93 Difference]: Finished difference Result 393 states and 508 transitions. [2022-11-16 19:29:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:29:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-16 19:29:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:41,644 INFO L225 Difference]: With dead ends: 393 [2022-11-16 19:29:41,644 INFO L226 Difference]: Without dead ends: 393 [2022-11-16 19:29:41,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:41,645 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 177 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:41,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 233 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-16 19:29:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 276. [2022-11-16 19:29:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 210 states have (on average 1.7857142857142858) internal successors, (375), 260 states have internal predecessors, (375), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 395 transitions. [2022-11-16 19:29:41,653 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 395 transitions. Word has length 17 [2022-11-16 19:29:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:41,653 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 395 transitions. [2022-11-16 19:29:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 395 transitions. [2022-11-16 19:29:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:29:41,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:41,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:41,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 19:29:41,654 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:41,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1965046475, now seen corresponding path program 1 times [2022-11-16 19:29:41,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:41,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857822757] [2022-11-16 19:29:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:41,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:41,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:41,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857822757] [2022-11-16 19:29:41,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857822757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:41,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:41,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:29:41,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111145009] [2022-11-16 19:29:41,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:41,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:29:41,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:41,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:29:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:41,819 INFO L87 Difference]: Start difference. First operand 276 states and 395 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:42,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:42,035 INFO L93 Difference]: Finished difference Result 324 states and 413 transitions. [2022-11-16 19:29:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:29:42,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-16 19:29:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:42,040 INFO L225 Difference]: With dead ends: 324 [2022-11-16 19:29:42,040 INFO L226 Difference]: Without dead ends: 324 [2022-11-16 19:29:42,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:42,041 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 232 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:42,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 249 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:42,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-16 19:29:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 276. [2022-11-16 19:29:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 210 states have (on average 1.7428571428571429) internal successors, (366), 260 states have internal predecessors, (366), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 386 transitions. [2022-11-16 19:29:42,048 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 386 transitions. Word has length 17 [2022-11-16 19:29:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:42,049 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 386 transitions. [2022-11-16 19:29:42,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 386 transitions. [2022-11-16 19:29:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:29:42,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:42,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:42,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 19:29:42,050 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:42,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1481707521, now seen corresponding path program 1 times [2022-11-16 19:29:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:42,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046409022] [2022-11-16 19:29:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:42,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:42,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:42,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046409022] [2022-11-16 19:29:42,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046409022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:42,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:42,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:29:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166479288] [2022-11-16 19:29:42,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:29:42,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:42,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:29:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:42,207 INFO L87 Difference]: Start difference. First operand 276 states and 386 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:42,390 INFO L93 Difference]: Finished difference Result 310 states and 394 transitions. [2022-11-16 19:29:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:29:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-16 19:29:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:42,392 INFO L225 Difference]: With dead ends: 310 [2022-11-16 19:29:42,392 INFO L226 Difference]: Without dead ends: 310 [2022-11-16 19:29:42,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:29:42,393 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 465 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:42,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 333 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:29:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-16 19:29:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 274. [2022-11-16 19:29:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 210 states have (on average 1.723809523809524) internal successors, (362), 258 states have internal predecessors, (362), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 382 transitions. [2022-11-16 19:29:42,400 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 382 transitions. Word has length 17 [2022-11-16 19:29:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:42,401 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 382 transitions. [2022-11-16 19:29:42,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 382 transitions. [2022-11-16 19:29:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 19:29:42,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:42,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 19:29:42,402 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2008215521, now seen corresponding path program 1 times [2022-11-16 19:29:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135630484] [2022-11-16 19:29:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:42,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:42,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135630484] [2022-11-16 19:29:42,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135630484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:42,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:42,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:29:42,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621604629] [2022-11-16 19:29:42,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:42,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:29:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:29:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:42,669 INFO L87 Difference]: Start difference. First operand 274 states and 382 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:42,844 INFO L93 Difference]: Finished difference Result 308 states and 390 transitions. [2022-11-16 19:29:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:29:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-16 19:29:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:42,846 INFO L225 Difference]: With dead ends: 308 [2022-11-16 19:29:42,847 INFO L226 Difference]: Without dead ends: 308 [2022-11-16 19:29:42,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:42,848 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 345 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:42,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 167 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-16 19:29:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 272. [2022-11-16 19:29:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 210 states have (on average 1.7047619047619047) internal successors, (358), 256 states have internal predecessors, (358), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 378 transitions. [2022-11-16 19:29:42,855 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 378 transitions. Word has length 19 [2022-11-16 19:29:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:42,855 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 378 transitions. [2022-11-16 19:29:42,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 378 transitions. [2022-11-16 19:29:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 19:29:42,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:42,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:42,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 19:29:42,860 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:42,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash -295202971, now seen corresponding path program 1 times [2022-11-16 19:29:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:42,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041950462] [2022-11-16 19:29:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:43,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041950462] [2022-11-16 19:29:43,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041950462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:43,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:43,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 19:29:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263239305] [2022-11-16 19:29:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:43,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:29:43,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:29:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:29:43,168 INFO L87 Difference]: Start difference. First operand 272 states and 378 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:43,781 INFO L93 Difference]: Finished difference Result 389 states and 519 transitions. [2022-11-16 19:29:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:29:43,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-16 19:29:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:43,783 INFO L225 Difference]: With dead ends: 389 [2022-11-16 19:29:43,783 INFO L226 Difference]: Without dead ends: 389 [2022-11-16 19:29:43,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:29:43,784 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 483 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:43,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 506 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:29:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-16 19:29:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 269. [2022-11-16 19:29:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 210 states have (on average 1.6571428571428573) internal successors, (348), 253 states have internal predecessors, (348), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 368 transitions. [2022-11-16 19:29:43,791 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 368 transitions. Word has length 20 [2022-11-16 19:29:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:43,792 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 368 transitions. [2022-11-16 19:29:43,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 368 transitions. [2022-11-16 19:29:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 19:29:43,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:43,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:43,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 19:29:43,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash -561355156, now seen corresponding path program 1 times [2022-11-16 19:29:43,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:43,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45550085] [2022-11-16 19:29:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:43,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:44,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:44,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45550085] [2022-11-16 19:29:44,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45550085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:44,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:44,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:29:44,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789544957] [2022-11-16 19:29:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:44,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:29:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:29:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:44,105 INFO L87 Difference]: Start difference. First operand 269 states and 368 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:44,403 INFO L93 Difference]: Finished difference Result 291 states and 375 transitions. [2022-11-16 19:29:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:29:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-16 19:29:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:44,406 INFO L225 Difference]: With dead ends: 291 [2022-11-16 19:29:44,406 INFO L226 Difference]: Without dead ends: 291 [2022-11-16 19:29:44,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:29:44,406 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 85 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:44,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 441 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:44,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-16 19:29:44,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 265. [2022-11-16 19:29:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 206 states have (on average 1.6407766990291262) internal successors, (338), 249 states have internal predecessors, (338), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 358 transitions. [2022-11-16 19:29:44,412 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 358 transitions. Word has length 21 [2022-11-16 19:29:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:44,413 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 358 transitions. [2022-11-16 19:29:44,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 358 transitions. [2022-11-16 19:29:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 19:29:44,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:44,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:44,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 19:29:44,414 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -561380229, now seen corresponding path program 1 times [2022-11-16 19:29:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:44,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699855925] [2022-11-16 19:29:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:44,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:44,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699855925] [2022-11-16 19:29:44,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699855925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:44,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:44,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:29:44,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939381695] [2022-11-16 19:29:44,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:44,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:29:44,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:44,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:29:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:44,537 INFO L87 Difference]: Start difference. First operand 265 states and 358 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:44,711 INFO L93 Difference]: Finished difference Result 290 states and 374 transitions. [2022-11-16 19:29:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:29:44,712 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-16 19:29:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:44,713 INFO L225 Difference]: With dead ends: 290 [2022-11-16 19:29:44,714 INFO L226 Difference]: Without dead ends: 290 [2022-11-16 19:29:44,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:29:44,714 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 85 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:44,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 360 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:29:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-16 19:29:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 265. [2022-11-16 19:29:44,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 206 states have (on average 1.6359223300970873) internal successors, (337), 249 states have internal predecessors, (337), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 357 transitions. [2022-11-16 19:29:44,726 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 357 transitions. Word has length 21 [2022-11-16 19:29:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:44,726 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 357 transitions. [2022-11-16 19:29:44,727 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 357 transitions. [2022-11-16 19:29:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 19:29:44,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:44,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:44,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 19:29:44,729 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:44,729 INFO L85 PathProgramCache]: Analyzing trace with hash -222917724, now seen corresponding path program 1 times [2022-11-16 19:29:44,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:44,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949936325] [2022-11-16 19:29:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:44,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:44,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:44,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949936325] [2022-11-16 19:29:44,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949936325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:44,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:44,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:29:44,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805531248] [2022-11-16 19:29:44,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:44,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:29:44,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:29:44,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:29:44,909 INFO L87 Difference]: Start difference. First operand 265 states and 357 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:45,168 INFO L93 Difference]: Finished difference Result 346 states and 448 transitions. [2022-11-16 19:29:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:29:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-11-16 19:29:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:45,174 INFO L225 Difference]: With dead ends: 346 [2022-11-16 19:29:45,174 INFO L226 Difference]: Without dead ends: 346 [2022-11-16 19:29:45,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:29:45,174 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 128 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:45,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 336 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-16 19:29:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 295. [2022-11-16 19:29:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 233 states have (on average 1.6266094420600858) internal successors, (379), 277 states have internal predecessors, (379), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 19:29:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 403 transitions. [2022-11-16 19:29:45,182 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 403 transitions. Word has length 22 [2022-11-16 19:29:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:45,182 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 403 transitions. [2022-11-16 19:29:45,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 403 transitions. [2022-11-16 19:29:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 19:29:45,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:45,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:45,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 19:29:45,183 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:45,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash 524438214, now seen corresponding path program 1 times [2022-11-16 19:29:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:45,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810742482] [2022-11-16 19:29:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:45,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:45,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810742482] [2022-11-16 19:29:45,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810742482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:45,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:45,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:29:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477033897] [2022-11-16 19:29:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:45,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:29:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:29:45,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:45,384 INFO L87 Difference]: Start difference. First operand 295 states and 403 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:45,994 INFO L93 Difference]: Finished difference Result 538 states and 713 transitions. [2022-11-16 19:29:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 19:29:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-16 19:29:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:45,997 INFO L225 Difference]: With dead ends: 538 [2022-11-16 19:29:45,997 INFO L226 Difference]: Without dead ends: 538 [2022-11-16 19:29:45,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:29:45,997 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 271 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:45,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 472 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:29:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-16 19:29:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 324. [2022-11-16 19:29:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.6023166023166022) internal successors, (415), 304 states have internal predecessors, (415), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:29:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 443 transitions. [2022-11-16 19:29:46,007 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 443 transitions. Word has length 24 [2022-11-16 19:29:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:46,007 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 443 transitions. [2022-11-16 19:29:46,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 443 transitions. [2022-11-16 19:29:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 19:29:46,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:46,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 19:29:46,008 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -922284353, now seen corresponding path program 1 times [2022-11-16 19:29:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:46,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463816582] [2022-11-16 19:29:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:46,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:46,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463816582] [2022-11-16 19:29:46,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463816582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:46,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:46,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:29:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115279188] [2022-11-16 19:29:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:46,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:29:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:29:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:29:46,232 INFO L87 Difference]: Start difference. First operand 324 states and 443 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:46,628 INFO L93 Difference]: Finished difference Result 376 states and 473 transitions. [2022-11-16 19:29:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:29:46,629 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-16 19:29:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:46,630 INFO L225 Difference]: With dead ends: 376 [2022-11-16 19:29:46,631 INFO L226 Difference]: Without dead ends: 376 [2022-11-16 19:29:46,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:29:46,631 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 292 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:46,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 396 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:29:46,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-16 19:29:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 324. [2022-11-16 19:29:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.5868725868725868) internal successors, (411), 304 states have internal predecessors, (411), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:29:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 439 transitions. [2022-11-16 19:29:46,640 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 439 transitions. Word has length 25 [2022-11-16 19:29:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:46,640 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 439 transitions. [2022-11-16 19:29:46,640 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 439 transitions. [2022-11-16 19:29:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 19:29:46,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:46,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:46,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 19:29:46,641 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1239619489, now seen corresponding path program 1 times [2022-11-16 19:29:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:46,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559592464] [2022-11-16 19:29:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:29:47,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559592464] [2022-11-16 19:29:47,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559592464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:29:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160282393] [2022-11-16 19:29:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:47,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:29:47,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:29:47,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:29:47,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:29:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:47,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 19:29:47,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:29:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:47,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:29:47,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:29:47,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-16 19:29:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:29:48,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160282393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:29:48,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1272877437] [2022-11-16 19:29:48,145 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-16 19:29:48,145 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:29:48,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:29:48,154 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:29:48,154 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:29:48,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:48,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:48,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:48,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:48,456 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:29:48,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:29:48,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:48,650 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:29:48,651 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:29:48,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:48,700 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:29:48,700 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 257 treesize of output 232 [2022-11-16 19:29:48,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:48,777 INFO L321 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-16 19:29:48,778 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 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-16 19:29:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,003 INFO L321 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-16 19:29:49,004 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 5 case distinctions, treesize of input 267 treesize of output 258 [2022-11-16 19:29:49,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,127 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:29:49,127 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:29:49,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,195 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:29:49,195 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 257 treesize of output 232 [2022-11-16 19:29:49,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,425 INFO L321 Elim1Store]: treesize reduction 260, result has 9.1 percent of original size [2022-11-16 19:29:49,426 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 12 case distinctions, treesize of input 286 treesize of output 264 [2022-11-16 19:29:49,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,512 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:29:49,512 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 7 case distinctions, treesize of input 282 treesize of output 261 [2022-11-16 19:29:49,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,541 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 239 treesize of output 233 [2022-11-16 19:29:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,927 INFO L321 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-16 19:29:49,928 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 9 case distinctions, treesize of input 278 treesize of output 290 [2022-11-16 19:29:49,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:49,995 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:29:49,996 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:29:50,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:50,102 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:29:50,102 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 9 case distinctions, treesize of input 258 treesize of output 252 [2022-11-16 19:29:51,007 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:29:51,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:29:51,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:29:51,066 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 26 [2022-11-16 19:29:51,080 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 26 [2022-11-16 19:29:51,104 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 23 treesize of output 1 [2022-11-16 19:29:51,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,152 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 38 treesize of output 40 [2022-11-16 19:29:51,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,171 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 38 treesize of output 40 [2022-11-16 19:29:51,187 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 23 treesize of output 1 [2022-11-16 19:29:51,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,257 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 53 treesize of output 43 [2022-11-16 19:29:51,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:51,299 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 53 treesize of output 43 [2022-11-16 19:29:51,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:29:51,419 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 23 treesize of output 1 [2022-11-16 19:29:51,429 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 11 [2022-11-16 19:29:51,445 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 11 [2022-11-16 19:29:52,166 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:29:52,167 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:29:52,203 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:29:52,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:29:52,246 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 23 treesize of output 1 [2022-11-16 19:29:52,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:29:52,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:29:52,339 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:29:52,340 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:29:52,378 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:29:52,378 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:29:52,397 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 23 treesize of output 1 [2022-11-16 19:29:52,487 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:29:52,488 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:29:52,572 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:29:52,573 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:29:52,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:29:52,748 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 11 [2022-11-16 19:29:52,760 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 23 treesize of output 1 [2022-11-16 19:29:52,773 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 11 [2022-11-16 19:29:53,054 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:29:53,055 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:29:53,087 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:29:53,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:29:53,130 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 26 [2022-11-16 19:29:53,143 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 23 treesize of output 1 [2022-11-16 19:29:53,164 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 26 [2022-11-16 19:29:53,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:53,209 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 38 treesize of output 40 [2022-11-16 19:29:53,225 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 23 treesize of output 1 [2022-11-16 19:29:53,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:53,270 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 38 treesize of output 40 [2022-11-16 19:29:53,286 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:29:53,301 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:29:57,493 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14725#(and (<= |~#list~0.base| 3) (= |~#list~0.offset| |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 0 |#NULL.base|) (not (<= (+ (* 4 |ULTIMATE.start_append_one_~to#1|) |ULTIMATE.start_append_one_~list#1.offset| 4) (select |#length| |ULTIMATE.start_append_one_~list#1.base|))) (= |ULTIMATE.start_append_one_#in~to#1| |ULTIMATE.start_main_#t~ret21#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_append_one_~list#1.offset| |ULTIMATE.start_append_one_#in~list#1.offset|) (= |ULTIMATE.start_append_one_#in~list#1.base| |ULTIMATE.start_append_one_~list#1.base|) (or (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret21#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret21#1|)) (= |ULTIMATE.start_append_one_#in~to#1| |ULTIMATE.start_append_one_~to#1|) (<= |#NULL.base| 0) (= |ULTIMATE.start_append_one_#in~list#1.base| |~#list~0.base|) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:29:57,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:29:57,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:29:57,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 20 [2022-11-16 19:29:57,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915863239] [2022-11-16 19:29:57,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:29:57,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 19:29:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 19:29:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 19:29:57,497 INFO L87 Difference]: Start difference. First operand 324 states and 439 transitions. Second operand has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 19:29:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:58,054 INFO L93 Difference]: Finished difference Result 355 states and 447 transitions. [2022-11-16 19:29:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:29:58,055 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2022-11-16 19:29:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:58,056 INFO L225 Difference]: With dead ends: 355 [2022-11-16 19:29:58,056 INFO L226 Difference]: Without dead ends: 355 [2022-11-16 19:29:58,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=354, Invalid=1368, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 19:29:58,057 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 667 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:58,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 824 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:29:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-16 19:29:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 311. [2022-11-16 19:29:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 248 states have (on average 1.5766129032258065) internal successors, (391), 292 states have internal predecessors, (391), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:29:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 419 transitions. [2022-11-16 19:29:58,066 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 419 transitions. Word has length 28 [2022-11-16 19:29:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:58,067 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 419 transitions. [2022-11-16 19:29:58,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 19:29:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 419 transitions. [2022-11-16 19:29:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 19:29:58,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:58,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:58,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:29:58,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:29:58,275 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:58,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:58,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1235290442, now seen corresponding path program 1 times [2022-11-16 19:29:58,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:58,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162335108] [2022-11-16 19:29:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:58,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:58,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:58,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162335108] [2022-11-16 19:29:58,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162335108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:58,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:58,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:29:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019103518] [2022-11-16 19:29:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:58,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:29:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:29:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:29:58,529 INFO L87 Difference]: Start difference. First operand 311 states and 419 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:58,822 INFO L93 Difference]: Finished difference Result 344 states and 430 transitions. [2022-11-16 19:29:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:29:58,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-16 19:29:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:58,824 INFO L225 Difference]: With dead ends: 344 [2022-11-16 19:29:58,824 INFO L226 Difference]: Without dead ends: 344 [2022-11-16 19:29:58,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:29:58,825 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 257 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:58,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 313 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-16 19:29:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 306. [2022-11-16 19:29:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 244 states have (on average 1.5737704918032787) internal successors, (384), 287 states have internal predecessors, (384), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:29:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 412 transitions. [2022-11-16 19:29:58,844 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 412 transitions. Word has length 29 [2022-11-16 19:29:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:58,844 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 412 transitions. [2022-11-16 19:29:58,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:29:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 412 transitions. [2022-11-16 19:29:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 19:29:58,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:58,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:58,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 19:29:58,846 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash 640476896, now seen corresponding path program 1 times [2022-11-16 19:29:58,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:58,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595969383] [2022-11-16 19:29:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:58,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:29:59,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:59,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595969383] [2022-11-16 19:29:59,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595969383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:59,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:59,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:29:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040824240] [2022-11-16 19:29:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:59,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:29:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:29:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:29:59,079 INFO L87 Difference]: Start difference. First operand 306 states and 412 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:29:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:59,337 INFO L93 Difference]: Finished difference Result 393 states and 491 transitions. [2022-11-16 19:29:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:29:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-16 19:29:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:59,339 INFO L225 Difference]: With dead ends: 393 [2022-11-16 19:29:59,339 INFO L226 Difference]: Without dead ends: 393 [2022-11-16 19:29:59,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:29:59,339 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 420 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:59,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 224 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-16 19:29:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 304. [2022-11-16 19:29:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 244 states have (on average 1.5573770491803278) internal successors, (380), 285 states have internal predecessors, (380), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:29:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 408 transitions. [2022-11-16 19:29:59,349 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 408 transitions. Word has length 30 [2022-11-16 19:29:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:59,349 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 408 transitions. [2022-11-16 19:29:59,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:29:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 408 transitions. [2022-11-16 19:29:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 19:29:59,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:59,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 19:29:59,352 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:29:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1703101190, now seen corresponding path program 1 times [2022-11-16 19:29:59,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:59,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216897628] [2022-11-16 19:29:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:30:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:30:00,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:30:00,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216897628] [2022-11-16 19:30:00,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216897628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:30:00,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:30:00,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 19:30:00,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221117239] [2022-11-16 19:30:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:30:00,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 19:30:00,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:30:00,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 19:30:00,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:30:00,806 INFO L87 Difference]: Start difference. First operand 304 states and 408 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:30:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:30:02,013 INFO L93 Difference]: Finished difference Result 330 states and 432 transitions. [2022-11-16 19:30:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 19:30:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-11-16 19:30:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:30:02,015 INFO L225 Difference]: With dead ends: 330 [2022-11-16 19:30:02,035 INFO L226 Difference]: Without dead ends: 330 [2022-11-16 19:30:02,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-11-16 19:30:02,035 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 91 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:30:02,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 785 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 19:30:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-16 19:30:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 316. [2022-11-16 19:30:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 256 states have (on average 1.55078125) internal successors, (397), 297 states have internal predecessors, (397), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:30:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 425 transitions. [2022-11-16 19:30:02,046 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 425 transitions. Word has length 31 [2022-11-16 19:30:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:30:02,047 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 425 transitions. [2022-11-16 19:30:02,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:30:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 425 transitions. [2022-11-16 19:30:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 19:30:02,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:30:02,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:30:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 19:30:02,048 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:30:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:30:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1414973192, now seen corresponding path program 1 times [2022-11-16 19:30:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:30:02,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471090766] [2022-11-16 19:30:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:30:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:30:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:30:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:30:04,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:30:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471090766] [2022-11-16 19:30:04,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471090766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:30:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001619433] [2022-11-16 19:30:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:30:04,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:30:04,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:30:04,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:30:04,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:30:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:30:04,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 19:30:04,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:30:04,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:04,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:30:04,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:30:04,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:30:05,120 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:30:05,121 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 60 treesize of output 43 [2022-11-16 19:30:05,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:05,574 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 19:30:05,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 19 [2022-11-16 19:30:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:30:05,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:30:06,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:06,022 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 265 treesize of output 267 [2022-11-16 19:30:06,038 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 32 treesize of output 26 [2022-11-16 19:30:06,070 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-16 19:30:06,071 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 290 treesize of output 296 [2022-11-16 19:30:07,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:07,513 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 73 treesize of output 78 [2022-11-16 19:30:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:30:08,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001619433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:30:08,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405160754] [2022-11-16 19:30:08,224 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-16 19:30:08,224 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:30:08,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:30:08,224 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:30:08,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:30:08,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,440 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:30:08,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:30:08,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,601 INFO L321 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-16 19:30:08,601 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 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-16 19:30:08,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,672 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:30:08,672 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 5 case distinctions, treesize of input 248 treesize of output 243 [2022-11-16 19:30:08,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,711 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:30:08,711 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 245 treesize of output 220 [2022-11-16 19:30:08,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,822 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:30:08,822 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 245 treesize of output 220 [2022-11-16 19:30:08,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,891 INFO L321 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-16 19:30:08,891 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 5 case distinctions, treesize of input 257 treesize of output 258 [2022-11-16 19:30:08,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:08,992 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:30:08,992 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 9 case distinctions, treesize of input 259 treesize of output 257 [2022-11-16 19:30:09,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,219 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:30:09,219 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 12 case distinctions, treesize of input 274 treesize of output 260 [2022-11-16 19:30:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 229 [2022-11-16 19:30:09,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,329 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:30:09,329 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 7 case distinctions, treesize of input 272 treesize of output 261 [2022-11-16 19:30:09,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,630 INFO L321 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-16 19:30:09,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 290 [2022-11-16 19:30:09,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,693 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:30:09,694 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:30:09,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:09,796 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:30:09,796 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 9 case distinctions, treesize of input 260 treesize of output 252 [2022-11-16 19:30:10,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:10,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,360 INFO L321 Elim1Store]: treesize reduction 206, result has 10.0 percent of original size [2022-11-16 19:30:10,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 754 treesize of output 690 [2022-11-16 19:30:10,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,490 INFO L321 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-16 19:30:10,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 667 treesize of output 621 [2022-11-16 19:30:10,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:10,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:10,544 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 2 case distinctions, treesize of input 612 treesize of output 558 [2022-11-16 19:30:11,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:11,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:11,163 INFO L321 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-16 19:30:11,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 603 treesize of output 472 [2022-11-16 19:30:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:11,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:11,851 INFO L321 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-16 19:30:11,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 603 treesize of output 472 [2022-11-16 19:30:12,631 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:12,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:12,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:30:12,697 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 11 [2022-11-16 19:30:12,706 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 11 [2022-11-16 19:30:12,714 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 23 treesize of output 1 [2022-11-16 19:30:12,732 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 23 treesize of output 1 [2022-11-16 19:30:12,757 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:12,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:12,785 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:12,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:12,862 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:12,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:12,926 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:12,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:12,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:13,117 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 11 [2022-11-16 19:30:13,128 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 11 [2022-11-16 19:30:13,197 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 23 treesize of output 1 [2022-11-16 19:30:13,375 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:30:13,375 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 38 treesize of output 41 [2022-11-16 19:30:13,404 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:13,404 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 38 treesize of output 29 [2022-11-16 19:30:13,481 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 23 treesize of output 1 [2022-11-16 19:30:14,678 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:30:14,678 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:30:14,708 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:14,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:14,733 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 11 [2022-11-16 19:30:14,741 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 23 treesize of output 1 [2022-11-16 19:30:14,752 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 11 [2022-11-16 19:30:14,783 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:14,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:14,812 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:14,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:14,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:30:14,885 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:14,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:14,958 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:14,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:14,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:15,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:30:15,157 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 23 treesize of output 1 [2022-11-16 19:30:15,168 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 11 [2022-11-16 19:30:15,336 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 23 treesize of output 1 [2022-11-16 19:30:15,375 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:30:15,376 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 38 treesize of output 41 [2022-11-16 19:30:15,416 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:15,417 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 38 treesize of output 29 [2022-11-16 19:30:15,724 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:30:15,724 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:30:15,786 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:15,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:15,829 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 23 treesize of output 1 [2022-11-16 19:30:15,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:30:15,852 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 26 [2022-11-16 19:30:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:15,888 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 38 treesize of output 40 [2022-11-16 19:30:15,901 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 23 treesize of output 1 [2022-11-16 19:30:15,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:15,922 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 38 treesize of output 40 [2022-11-16 19:30:15,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:15,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:15,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:15,984 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 53 treesize of output 43 [2022-11-16 19:30:16,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:16,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:16,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:16,018 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 53 treesize of output 43 [2022-11-16 19:30:16,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:16,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:30:16,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 19:30:16,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:16,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:30:16,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:16,250 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:16,251 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 2 case distinctions, treesize of input 60 treesize of output 57 [2022-11-16 19:30:16,278 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 33 treesize of output 13 [2022-11-16 19:30:16,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:16,318 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:30:16,319 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 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-16 19:30:16,763 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:16,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:16,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:30:16,811 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 23 treesize of output 1 [2022-11-16 19:30:16,818 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 15 treesize of output 11 [2022-11-16 19:30:16,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:30:16,864 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:16,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:16,891 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:16,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:16,905 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 23 treesize of output 1 [2022-11-16 19:30:16,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:16,977 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:16,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:17,038 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:17,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:17,158 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 11 [2022-11-16 19:30:17,170 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 11 [2022-11-16 19:30:17,181 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 23 treesize of output 1 [2022-11-16 19:30:17,363 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 23 treesize of output 1 [2022-11-16 19:30:17,396 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:30:17,397 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 38 treesize of output 41 [2022-11-16 19:30:17,436 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:17,436 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 38 treesize of output 29 [2022-11-16 19:30:18,548 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:30:18,548 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:30:18,580 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:18,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:18,606 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 11 [2022-11-16 19:30:18,613 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 23 treesize of output 1 [2022-11-16 19:30:18,621 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 15 treesize of output 11 [2022-11-16 19:30:18,654 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:18,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:18,668 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 23 treesize of output 1 [2022-11-16 19:30:18,691 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:18,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:18,753 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:18,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:18,821 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:18,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:18,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:19,005 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 23 treesize of output 1 [2022-11-16 19:30:19,015 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 11 [2022-11-16 19:30:19,083 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 11 [2022-11-16 19:30:19,223 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 23 treesize of output 1 [2022-11-16 19:30:19,247 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:19,247 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 38 treesize of output 29 [2022-11-16 19:30:19,280 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:30:19,280 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 38 treesize of output 41 [2022-11-16 19:30:19,671 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:19,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:19,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:30:19,717 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 23 treesize of output 1 [2022-11-16 19:30:19,733 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 27 treesize of output 26 [2022-11-16 19:30:19,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:30:19,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,798 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 38 treesize of output 40 [2022-11-16 19:30:19,818 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 23 treesize of output 1 [2022-11-16 19:30:19,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,832 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 38 treesize of output 40 [2022-11-16 19:30:19,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,874 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 53 treesize of output 43 [2022-11-16 19:30:19,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:19,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,915 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 53 treesize of output 43 [2022-11-16 19:30:19,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:30:19,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:19,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:30:20,023 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 33 treesize of output 13 [2022-11-16 19:30:20,083 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 33 treesize of output 13 [2022-11-16 19:30:20,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:20,114 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:20,115 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 2 case distinctions, treesize of input 60 treesize of output 57 [2022-11-16 19:30:20,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:20,171 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:30:20,172 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 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-16 19:30:20,623 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:30:20,623 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:30:20,677 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:20,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:20,710 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 11 [2022-11-16 19:30:20,717 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 11 [2022-11-16 19:30:20,726 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 23 treesize of output 1 [2022-11-16 19:30:20,760 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:20,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:20,771 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 23 treesize of output 1 [2022-11-16 19:30:20,806 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:20,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:20,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:20,883 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:20,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:20,945 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:20,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:21,118 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 11 [2022-11-16 19:30:21,128 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 23 treesize of output 1 [2022-11-16 19:30:21,138 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 11 [2022-11-16 19:30:21,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:30:21,335 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:30:21,336 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 38 treesize of output 41 [2022-11-16 19:30:21,364 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:21,364 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 38 treesize of output 29 [2022-11-16 19:30:22,314 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:22,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:22,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:30:22,367 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 23 treesize of output 1 [2022-11-16 19:30:22,377 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 11 [2022-11-16 19:30:22,385 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 11 [2022-11-16 19:30:22,422 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:22,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:22,449 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:22,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:22,460 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 23 treesize of output 1 [2022-11-16 19:30:22,521 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:22,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:22,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:22,592 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:22,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:22,725 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 11 [2022-11-16 19:30:22,746 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 23 treesize of output 1 [2022-11-16 19:30:22,759 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 11 [2022-11-16 19:30:22,949 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:22,949 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 38 treesize of output 29 [2022-11-16 19:30:22,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:30:22,993 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:30:22,993 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 38 treesize of output 41 [2022-11-16 19:30:23,431 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:30:23,445 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:30:30,294 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17685#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~cursor~0#1.base|) 1)) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (<= |#NULL.base| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (or (not (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|)) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:30:30,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:30:30,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:30:30,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 12] total 37 [2022-11-16 19:30:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411324820] [2022-11-16 19:30:30,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:30:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 19:30:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:30:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 19:30:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3441, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 19:30:30,298 INFO L87 Difference]: Start difference. First operand 316 states and 425 transitions. Second operand has 38 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 38 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:30:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:30:33,270 INFO L93 Difference]: Finished difference Result 394 states and 498 transitions. [2022-11-16 19:30:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 19:30:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 38 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-16 19:30:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:30:33,273 INFO L225 Difference]: With dead ends: 394 [2022-11-16 19:30:33,273 INFO L226 Difference]: Without dead ends: 394 [2022-11-16 19:30:33,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=414, Invalid=4988, Unknown=0, NotChecked=0, Total=5402 [2022-11-16 19:30:33,275 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 362 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:30:33,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1449 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1441 Invalid, 0 Unknown, 474 Unchecked, 1.4s Time] [2022-11-16 19:30:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-16 19:30:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 352. [2022-11-16 19:30:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 293 states have (on average 1.5426621160409557) internal successors, (452), 332 states have internal predecessors, (452), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:30:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 480 transitions. [2022-11-16 19:30:33,284 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 480 transitions. Word has length 32 [2022-11-16 19:30:33,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:30:33,284 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 480 transitions. [2022-11-16 19:30:33,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 38 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:30:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 480 transitions. [2022-11-16 19:30:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 19:30:33,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:30:33,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:30:33,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:30:33,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 19:30:33,491 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:30:33,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:30:33,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1414973191, now seen corresponding path program 1 times [2022-11-16 19:30:33,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:30:33,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218357840] [2022-11-16 19:30:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:30:33,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:30:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:30:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:30:36,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:30:36,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218357840] [2022-11-16 19:30:36,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218357840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:30:36,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573711370] [2022-11-16 19:30:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:30:36,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:30:36,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:30:36,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:30:36,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:30:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:30:36,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 19:30:36,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:30:36,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:36,314 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:30:36,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 19:30:36,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:30:36,713 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 11 [2022-11-16 19:30:37,320 INFO L321 Elim1Store]: treesize reduction 52, result has 54.8 percent of original size [2022-11-16 19:30:37,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 147 [2022-11-16 19:30:37,365 INFO L321 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-11-16 19:30:37,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 128 [2022-11-16 19:30:38,519 INFO L321 Elim1Store]: treesize reduction 33, result has 54.8 percent of original size [2022-11-16 19:30:38,519 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 127 [2022-11-16 19:30:38,594 INFO L321 Elim1Store]: treesize reduction 33, result has 54.8 percent of original size [2022-11-16 19:30:38,595 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 109 [2022-11-16 19:30:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:30:38,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:30:39,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:39,823 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 609 treesize of output 611 [2022-11-16 19:30:39,839 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 19:30:39,840 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 1653 treesize of output 1573 [2022-11-16 19:30:39,868 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 32 treesize of output 26 [2022-11-16 19:30:40,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:40,653 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 229 treesize of output 225 [2022-11-16 19:30:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:30:42,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573711370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:30:42,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [554225458] [2022-11-16 19:30:42,523 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-16 19:30:42,523 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:30:42,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:30:42,524 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:30:42,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:30:42,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:42,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:42,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:42,695 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:30:42,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:30:42,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:42,836 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:30:42,836 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:30:42,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:42,899 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:30:42,899 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:30:42,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:42,934 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:30:42,934 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 257 treesize of output 232 [2022-11-16 19:30:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,084 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:30:43,085 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:30:43,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,130 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:30:43,131 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 257 treesize of output 232 [2022-11-16 19:30:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,212 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:30:43,212 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:30:43,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,370 INFO L321 Elim1Store]: treesize reduction 260, result has 9.1 percent of original size [2022-11-16 19:30:43,371 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 12 case distinctions, treesize of input 286 treesize of output 264 [2022-11-16 19:30:43,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,394 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 235 treesize of output 229 [2022-11-16 19:30:43,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,482 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:30:43,483 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 12 case distinctions, treesize of input 274 treesize of output 260 [2022-11-16 19:30:43,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,691 INFO L321 Elim1Store]: treesize reduction 288, result has 11.9 percent of original size [2022-11-16 19:30:43,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 272 [2022-11-16 19:30:43,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,790 INFO L321 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-16 19:30:43,790 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 9 case distinctions, treesize of input 280 treesize of output 290 [2022-11-16 19:30:43,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:43,832 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:30:43,832 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:30:44,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,114 INFO L321 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-16 19:30:44,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 316 treesize of output 296 [2022-11-16 19:30:44,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:44,154 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 2 case distinctions, treesize of input 240 treesize of output 218 [2022-11-16 19:30:44,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,199 INFO L321 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-11-16 19:30:44,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 267 treesize of output 240 [2022-11-16 19:30:44,497 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:30:44,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-16 19:30:44,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:44,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:30:44,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-16 19:30:44,695 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:30:44,879 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:30:44,881 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:30:44,927 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:44,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:44,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:30:44,972 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 11 [2022-11-16 19:30:44,987 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 23 treesize of output 1 [2022-11-16 19:30:45,017 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:45,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:45,029 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 23 treesize of output 1 [2022-11-16 19:30:45,051 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:45,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:45,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:45,122 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:45,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:45,199 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:45,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:45,361 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 11 [2022-11-16 19:30:45,371 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 11 [2022-11-16 19:30:45,449 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 23 treesize of output 1 [2022-11-16 19:30:45,565 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 23 treesize of output 1 [2022-11-16 19:30:45,595 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:30:45,595 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 38 treesize of output 41 [2022-11-16 19:30:45,621 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:30:45,621 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 38 treesize of output 29 [2022-11-16 19:30:46,617 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:30:46,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:30:46,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:30:46,669 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 23 treesize of output 1 [2022-11-16 19:30:46,676 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 11 [2022-11-16 19:30:46,683 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 11 [2022-11-16 19:30:46,714 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:46,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:46,743 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:30:46,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:30:46,757 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 23 treesize of output 1 [2022-11-16 19:30:46,819 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:46,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:46,882 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:30:46,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:30:46,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:30:47,019 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:30:47,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:30:47,163 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:30:47,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:30:47,280 INFO L321 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-16 19:30:47,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-16 19:30:47,553 INFO L321 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-11-16 19:30:47,553 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 292 treesize of output 225 [2022-11-16 19:30:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:47,599 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 47 treesize of output 27 [2022-11-16 19:30:47,724 INFO L321 Elim1Store]: treesize reduction 176, result has 30.7 percent of original size [2022-11-16 19:30:47,725 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 289 treesize of output 266 [2022-11-16 19:30:47,970 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5144 conjuctions. This might take some time... [2022-11-16 19:30:58,698 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 4184 conjuctions. [2022-11-16 19:30:58,856 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5144 conjuctions. This might take some time... [2022-11-16 19:31:09,586 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 4184 conjuctions. [2022-11-16 19:31:11,581 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:31:11,581 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:31:11,627 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:31:11,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:31:11,657 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 23 treesize of output 1 [2022-11-16 19:31:11,672 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 26 [2022-11-16 19:31:11,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:31:11,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,716 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 38 treesize of output 40 [2022-11-16 19:31:11,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,733 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 38 treesize of output 40 [2022-11-16 19:31:11,755 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 23 treesize of output 1 [2022-11-16 19:31:11,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,798 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 53 treesize of output 43 [2022-11-16 19:31:11,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,830 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 53 treesize of output 43 [2022-11-16 19:31:11,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:31:11,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:31:11,944 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 33 treesize of output 13 [2022-11-16 19:31:11,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:11,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:31:12,029 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 33 treesize of output 13 [2022-11-16 19:31:12,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:12,072 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:31:12,072 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 2 case distinctions, treesize of input 60 treesize of output 57 [2022-11-16 19:31:12,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:12,113 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:31:12,114 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 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-16 19:31:12,504 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:31:12,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:31:12,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:31:12,546 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 23 treesize of output 1 [2022-11-16 19:31:12,556 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 11 [2022-11-16 19:31:12,564 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 11 [2022-11-16 19:31:12,595 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:12,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:12,610 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 23 treesize of output 1 [2022-11-16 19:31:12,632 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:12,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:12,699 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:12,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:12,760 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:12,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:12,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:31:12,883 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 11 [2022-11-16 19:31:12,894 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 11 [2022-11-16 19:31:12,904 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 23 treesize of output 1 [2022-11-16 19:31:13,087 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:31:13,087 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 38 treesize of output 29 [2022-11-16 19:31:13,120 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:31:13,120 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 38 treesize of output 41 [2022-11-16 19:31:13,134 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 23 treesize of output 1 [2022-11-16 19:31:14,036 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:31:14,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:31:14,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:31:14,092 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 11 [2022-11-16 19:31:14,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:31:14,108 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 23 treesize of output 1 [2022-11-16 19:31:14,142 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:14,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:14,170 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:14,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:14,182 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 23 treesize of output 1 [2022-11-16 19:31:14,240 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:14,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:14,300 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:14,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:14,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:31:14,425 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 11 [2022-11-16 19:31:14,435 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 11 [2022-11-16 19:31:14,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:31:14,640 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:31:14,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-16 19:31:14,653 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 23 treesize of output 1 [2022-11-16 19:31:14,679 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:31:14,679 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 38 treesize of output 29 [2022-11-16 19:31:15,007 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:31:15,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:31:15,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:31:15,045 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 26 [2022-11-16 19:31:15,057 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 26 [2022-11-16 19:31:15,078 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 23 treesize of output 1 [2022-11-16 19:31:15,103 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 23 treesize of output 1 [2022-11-16 19:31:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,116 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 38 treesize of output 40 [2022-11-16 19:31:15,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,140 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 38 treesize of output 40 [2022-11-16 19:31:15,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,190 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 53 treesize of output 43 [2022-11-16 19:31:15,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,209 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 53 treesize of output 43 [2022-11-16 19:31:15,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:31:15,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:31:15,305 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 33 treesize of output 13 [2022-11-16 19:31:15,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:31:15,382 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 33 treesize of output 13 [2022-11-16 19:31:15,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,422 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:31:15,422 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 2 case distinctions, treesize of input 60 treesize of output 57 [2022-11-16 19:31:15,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:15,465 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:31:15,465 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 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-16 19:31:15,840 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:31:15,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:31:15,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:31:15,902 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 23 treesize of output 1 [2022-11-16 19:31:15,909 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 11 [2022-11-16 19:31:15,918 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 11 [2022-11-16 19:31:15,950 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:15,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:15,965 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 23 treesize of output 1 [2022-11-16 19:31:15,990 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:15,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:16,054 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:16,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:16,116 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:16,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:16,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:31:16,244 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 23 treesize of output 1 [2022-11-16 19:31:16,255 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 11 [2022-11-16 19:31:16,267 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 11 [2022-11-16 19:31:16,461 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:31:16,461 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 38 treesize of output 41 [2022-11-16 19:31:16,474 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 23 treesize of output 1 [2022-11-16 19:31:16,504 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:31:16,505 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 38 treesize of output 29 [2022-11-16 19:31:17,395 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:31:17,396 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:31:17,444 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:31:17,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:31:17,466 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 11 [2022-11-16 19:31:17,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:31:17,497 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 11 [2022-11-16 19:31:17,532 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:17,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:17,561 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:31:17,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:31:17,573 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 23 treesize of output 1 [2022-11-16 19:31:17,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:31:17,640 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:17,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:17,698 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:31:17,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:31:17,790 INFO L321 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-16 19:31:17,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-16 19:31:17,863 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:31:17,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:31:18,019 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:31:18,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:31:18,328 INFO L321 Elim1Store]: treesize reduction 176, result has 30.7 percent of original size [2022-11-16 19:31:18,329 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 269 treesize of output 254 [2022-11-16 19:31:18,582 INFO L321 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-11-16 19:31:18,583 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 325 treesize of output 258 [2022-11-16 19:31:18,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:18,649 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 47 treesize of output 27 [2022-11-16 19:31:38,371 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:31:38,378 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:31:46,121 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18706#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (<= |#NULL.base| 0) (or (not (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|))) (not (<= 0 (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|)))) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (or (not (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|)) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:31:46,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:31:46,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:31:46,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 13] total 38 [2022-11-16 19:31:46,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165593515] [2022-11-16 19:31:46,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:31:46,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-16 19:31:46,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:31:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-16 19:31:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3448, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 19:31:46,124 INFO L87 Difference]: Start difference. First operand 352 states and 480 transitions. Second operand has 39 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 38 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:31:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:31:50,709 INFO L93 Difference]: Finished difference Result 411 states and 522 transitions. [2022-11-16 19:31:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 19:31:50,710 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 38 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-16 19:31:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:31:50,711 INFO L225 Difference]: With dead ends: 411 [2022-11-16 19:31:50,711 INFO L226 Difference]: Without dead ends: 411 [2022-11-16 19:31:50,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=451, Invalid=5711, Unknown=0, NotChecked=0, Total=6162 [2022-11-16 19:31:50,713 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 418 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:31:50,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1157 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 969 Invalid, 0 Unknown, 118 Unchecked, 1.1s Time] [2022-11-16 19:31:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-16 19:31:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 353. [2022-11-16 19:31:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 294 states have (on average 1.5374149659863945) internal successors, (452), 333 states have internal predecessors, (452), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 19:31:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 480 transitions. [2022-11-16 19:31:50,723 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 480 transitions. Word has length 32 [2022-11-16 19:31:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:31:50,723 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 480 transitions. [2022-11-16 19:31:50,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 38 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:31:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 480 transitions. [2022-11-16 19:31:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 19:31:50,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:31:50,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:31:50,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:31:50,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:31:50,937 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:31:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:31:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1106088192, now seen corresponding path program 1 times [2022-11-16 19:31:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:31:50,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517437462] [2022-11-16 19:31:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:31:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:31:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:31:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:31:52,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:31:52,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517437462] [2022-11-16 19:31:52,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517437462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:31:52,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74206256] [2022-11-16 19:31:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:31:52,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:31:52,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:31:52,434 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:31:52,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:31:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:31:52,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 19:31:52,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:31:52,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:31:52,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:31:52,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:31:53,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:31:53,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:53,349 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 60 treesize of output 35 [2022-11-16 19:31:53,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:31:53,585 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 19:31:53,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 19 [2022-11-16 19:31:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:31:53,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:31:54,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:31:54,153 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 281 treesize of output 283 [2022-11-16 19:31:54,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-16 19:31:54,209 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-16 19:31:54,209 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 301 treesize of output 307 [2022-11-16 19:31:56,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:31:56,158 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 103 treesize of output 108 [2022-11-16 19:31:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:31:56,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74206256] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 19:31:56,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:31:56,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 14] total 40 [2022-11-16 19:31:56,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410108749] [2022-11-16 19:31:56,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:31:56,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 19:31:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:31:56,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 19:31:56,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1503, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 19:31:56,613 INFO L87 Difference]: Start difference. First operand 353 states and 480 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:31:58,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:31:58,660 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2022-11-16 19:31:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:31:58,661 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-16 19:31:58,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:31:58,664 INFO L225 Difference]: With dead ends: 568 [2022-11-16 19:31:58,664 INFO L226 Difference]: Without dead ends: 568 [2022-11-16 19:31:58,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=223, Invalid=2533, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 19:31:58,666 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 302 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 404 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:31:58,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1085 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1006 Invalid, 0 Unknown, 404 Unchecked, 1.0s Time] [2022-11-16 19:31:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-16 19:31:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 413. [2022-11-16 19:31:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 348 states have (on average 1.528735632183908) internal successors, (532), 389 states have internal predecessors, (532), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 14 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 19:31:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 568 transitions. [2022-11-16 19:31:58,683 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 568 transitions. Word has length 32 [2022-11-16 19:31:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:31:58,683 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 568 transitions. [2022-11-16 19:31:58,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:31:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 568 transitions. [2022-11-16 19:31:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 19:31:58,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:31:58,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:31:58,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:31:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:31:58,892 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:31:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:31:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1106088193, now seen corresponding path program 1 times [2022-11-16 19:31:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:31:58,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820769780] [2022-11-16 19:31:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:31:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:31:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:32:01,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:32:01,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820769780] [2022-11-16 19:32:01,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820769780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:32:01,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923666360] [2022-11-16 19:32:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:01,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:32:01,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:32:01,342 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:32:01,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:32:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:01,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 19:32:01,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:32:01,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:01,726 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:32:01,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 19:32:02,215 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 11 [2022-11-16 19:32:02,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 11 [2022-11-16 19:32:03,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:03,017 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 88 treesize of output 55 [2022-11-16 19:32:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:03,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:32:03,863 INFO L321 Elim1Store]: treesize reduction 24, result has 82.5 percent of original size [2022-11-16 19:32:03,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 181 treesize of output 221 [2022-11-16 19:32:03,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:03,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:03,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:32:03,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 117 treesize of output 189 [2022-11-16 19:32:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:32:05,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:32:06,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:32:06,602 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 609 treesize of output 611 [2022-11-16 19:32:06,617 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 19:32:06,617 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 1573 treesize of output 1493 [2022-11-16 19:32:06,643 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 32 treesize of output 26 [2022-11-16 19:32:07,438 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 32 treesize of output 26 [2022-11-16 19:32:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:32:08,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923666360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:32:08,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [523141298] [2022-11-16 19:32:08,995 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-16 19:32:08,995 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:32:08,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:32:08,996 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:32:08,996 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:32:09,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:09,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,149 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:32:09,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:32:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,277 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:32:09,277 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:32:09,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,343 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:32:09,343 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:32:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,377 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:32:09,378 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 257 treesize of output 232 [2022-11-16 19:32:09,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,521 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:32:09,521 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:32:09,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,612 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:32:09,613 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:32:09,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,646 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:32:09,647 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 257 treesize of output 232 [2022-11-16 19:32:09,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,820 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:32:09,821 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 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-16 19:32:09,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,843 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 247 treesize of output 241 [2022-11-16 19:32:09,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:09,927 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:32:09,927 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 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-16 19:32:10,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,124 INFO L321 Elim1Store]: treesize reduction 288, result has 11.9 percent of original size [2022-11-16 19:32:10,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 272 [2022-11-16 19:32:10,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,229 INFO L321 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-16 19:32:10,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 290 [2022-11-16 19:32:10,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,269 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:32:10,270 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:32:10,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:10,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:10,712 INFO L321 Elim1Store]: treesize reduction 266, result has 8.9 percent of original size [2022-11-16 19:32:10,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 565 treesize of output 519 [2022-11-16 19:32:10,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:10,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:10,806 INFO L321 Elim1Store]: treesize reduction 269, result has 7.9 percent of original size [2022-11-16 19:32:10,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 505 treesize of output 448 [2022-11-16 19:32:10,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:10,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:32:10,844 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 2 case distinctions, treesize of input 421 treesize of output 383 [2022-11-16 19:32:11,137 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:32:11,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:11,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:11,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:11,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:11,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:11,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 36 [2022-11-16 19:32:11,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:11,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:11,303 INFO L321 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2022-11-16 19:32:11,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 434 treesize of output 341 [2022-11-16 19:32:11,682 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:11,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:11,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:32:11,727 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 11 [2022-11-16 19:32:11,734 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 23 treesize of output 1 [2022-11-16 19:32:11,742 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 11 [2022-11-16 19:32:11,773 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:11,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:11,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:32:11,807 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:11,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:11,868 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:11,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:11,923 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:11,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:11,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:12,043 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 23 treesize of output 1 [2022-11-16 19:32:12,053 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 11 [2022-11-16 19:32:12,065 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 11 [2022-11-16 19:32:12,309 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 23 treesize of output 1 [2022-11-16 19:32:12,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:12,341 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:32:12,342 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 63 treesize of output 57 [2022-11-16 19:32:12,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:12,378 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:32:12,378 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 63 treesize of output 69 [2022-11-16 19:32:13,149 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:32:13,149 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:32:13,195 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:13,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:13,216 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 23 treesize of output 1 [2022-11-16 19:32:13,224 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 11 [2022-11-16 19:32:13,231 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 11 [2022-11-16 19:32:13,259 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:13,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:13,272 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 23 treesize of output 1 [2022-11-16 19:32:13,294 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:13,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:13,353 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:13,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:13,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:13,422 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:13,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:13,528 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 23 treesize of output 1 [2022-11-16 19:32:13,539 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 11 [2022-11-16 19:32:13,614 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 11 [2022-11-16 19:32:13,792 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 23 treesize of output 1 [2022-11-16 19:32:13,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:13,832 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:32:13,832 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 63 treesize of output 69 [2022-11-16 19:32:13,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:13,863 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:32:13,863 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 63 treesize of output 57 [2022-11-16 19:32:14,098 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:32:14,099 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:32:14,128 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:14,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:14,157 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 26 [2022-11-16 19:32:14,176 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 26 [2022-11-16 19:32:14,190 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 23 treesize of output 1 [2022-11-16 19:32:14,215 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 23 treesize of output 1 [2022-11-16 19:32:14,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,249 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 38 treesize of output 40 [2022-11-16 19:32:14,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,268 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 38 treesize of output 40 [2022-11-16 19:32:14,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,327 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 53 treesize of output 43 [2022-11-16 19:32:14,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:14,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,357 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 53 treesize of output 43 [2022-11-16 19:32:14,411 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 33 treesize of output 13 [2022-11-16 19:32:14,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:32:14,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:32:14,554 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 33 treesize of output 13 [2022-11-16 19:32:14,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:14,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,589 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2022-11-16 19:32:14,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:14,633 INFO L321 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2022-11-16 19:32:14,633 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 3 case distinctions, treesize of input 85 treesize of output 93 [2022-11-16 19:32:15,001 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:15,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:15,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:32:15,044 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 11 [2022-11-16 19:32:15,053 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 11 [2022-11-16 19:32:15,061 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 23 treesize of output 1 [2022-11-16 19:32:15,091 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:15,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:15,116 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:15,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:15,129 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 23 treesize of output 1 [2022-11-16 19:32:15,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:15,202 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:15,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:15,260 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:15,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:15,373 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 23 treesize of output 1 [2022-11-16 19:32:15,383 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 11 [2022-11-16 19:32:15,394 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 11 [2022-11-16 19:32:15,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:15,646 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:32:15,646 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 63 treesize of output 57 [2022-11-16 19:32:15,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:15,684 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:32:15,685 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 63 treesize of output 69 [2022-11-16 19:32:15,703 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 23 treesize of output 1 [2022-11-16 19:32:16,475 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:16,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:16,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:32:16,510 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 15 treesize of output 11 [2022-11-16 19:32:16,519 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 23 treesize of output 1 [2022-11-16 19:32:16,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:32:16,547 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 23 treesize of output 1 [2022-11-16 19:32:16,571 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:16,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:16,597 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:16,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:16,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:16,668 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:16,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:16,726 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:16,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:16,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:32:16,844 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 11 [2022-11-16 19:32:16,855 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 11 [2022-11-16 19:32:17,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,127 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:32:17,128 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 63 treesize of output 69 [2022-11-16 19:32:17,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,156 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:32:17,156 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 63 treesize of output 57 [2022-11-16 19:32:17,172 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 23 treesize of output 1 [2022-11-16 19:32:17,414 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:17,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:17,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:32:17,452 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 26 [2022-11-16 19:32:17,464 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 23 treesize of output 1 [2022-11-16 19:32:17,482 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 26 [2022-11-16 19:32:17,516 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 23 treesize of output 1 [2022-11-16 19:32:17,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,529 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 38 treesize of output 40 [2022-11-16 19:32:17,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,548 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 38 treesize of output 40 [2022-11-16 19:32:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,586 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 53 treesize of output 43 [2022-11-16 19:32:17,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:17,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,625 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 53 treesize of output 43 [2022-11-16 19:32:17,681 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 33 treesize of output 13 [2022-11-16 19:32:17,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:32:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:32:17,837 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 33 treesize of output 13 [2022-11-16 19:32:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,882 INFO L321 Elim1Store]: treesize reduction 52, result has 18.8 percent of original size [2022-11-16 19:32:17,882 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 3 case distinctions, treesize of input 85 treesize of output 85 [2022-11-16 19:32:17,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:17,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:17,916 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2022-11-16 19:32:18,239 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:32:18,240 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:32:18,274 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:18,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:18,309 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 11 [2022-11-16 19:32:18,317 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 15 treesize of output 11 [2022-11-16 19:32:18,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:32:18,361 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:18,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:18,390 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:18,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:18,404 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 23 treesize of output 1 [2022-11-16 19:32:18,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:18,480 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:18,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:18,543 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:18,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:18,711 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 11 [2022-11-16 19:32:18,722 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 11 [2022-11-16 19:32:18,794 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 23 treesize of output 1 [2022-11-16 19:32:18,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:19,006 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:32:19,006 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 63 treesize of output 69 [2022-11-16 19:32:19,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:19,038 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:32:19,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-16 19:32:19,054 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 23 treesize of output 1 [2022-11-16 19:32:19,800 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:32:19,800 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:32:19,845 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:19,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:19,872 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 23 treesize of output 1 [2022-11-16 19:32:19,879 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 11 [2022-11-16 19:32:19,892 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 11 [2022-11-16 19:32:19,925 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:19,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:19,952 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:32:19,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:32:19,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:32:20,027 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:20,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:20,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:32:20,096 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:32:20,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:32:20,220 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 11 [2022-11-16 19:32:20,230 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 23 treesize of output 1 [2022-11-16 19:32:20,240 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 11 [2022-11-16 19:32:20,477 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 23 treesize of output 1 [2022-11-16 19:32:20,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:20,516 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:32:20,516 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 63 treesize of output 69 [2022-11-16 19:32:20,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:20,547 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:32:20,547 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 63 treesize of output 57 [2022-11-16 19:32:20,895 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:32:20,901 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:32:28,188 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20993#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (<= |#NULL.base| 0) (or (not (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|))) (not (<= 0 (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|)))) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (or (not (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|)) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:32:28,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:32:28,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:32:28,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 42 [2022-11-16 19:32:28,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62171119] [2022-11-16 19:32:28,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:32:28,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 19:32:28,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:32:28,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 19:32:28,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=3979, Unknown=0, NotChecked=0, Total=4290 [2022-11-16 19:32:28,191 INFO L87 Difference]: Start difference. First operand 413 states and 568 transitions. Second operand has 43 states, 40 states have (on average 2.25) internal successors, (90), 41 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:32:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:32:45,015 INFO L93 Difference]: Finished difference Result 1027 states and 1320 transitions. [2022-11-16 19:32:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-16 19:32:45,015 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 2.25) internal successors, (90), 41 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-16 19:32:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:32:45,019 INFO L225 Difference]: With dead ends: 1027 [2022-11-16 19:32:45,019 INFO L226 Difference]: Without dead ends: 1027 [2022-11-16 19:32:45,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=1770, Invalid=11570, Unknown=0, NotChecked=0, Total=13340 [2022-11-16 19:32:45,023 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 2577 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 737 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:32:45,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2579 Valid, 2984 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2491 Invalid, 0 Unknown, 737 Unchecked, 3.1s Time] [2022-11-16 19:32:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-16 19:32:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 574. [2022-11-16 19:32:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 495 states have (on average 1.5454545454545454) internal successors, (765), 542 states have internal predecessors, (765), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (28), 18 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 19:32:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 821 transitions. [2022-11-16 19:32:45,051 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 821 transitions. Word has length 32 [2022-11-16 19:32:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:32:45,052 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 821 transitions. [2022-11-16 19:32:45,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 2.25) internal successors, (90), 41 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:32:45,052 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 821 transitions. [2022-11-16 19:32:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 19:32:45,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:32:45,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:32:45,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:32:45,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:32:45,253 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:32:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:32:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1106089446, now seen corresponding path program 1 times [2022-11-16 19:32:45,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:32:45,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683066126] [2022-11-16 19:32:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:45,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:32:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:32:46,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:32:46,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683066126] [2022-11-16 19:32:46,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683066126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:32:46,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:32:46,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 19:32:46,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934640550] [2022-11-16 19:32:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:32:46,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 19:32:46,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:32:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 19:32:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 19:32:46,208 INFO L87 Difference]: Start difference. First operand 574 states and 821 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:32:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:32:47,858 INFO L93 Difference]: Finished difference Result 992 states and 1352 transitions. [2022-11-16 19:32:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 19:32:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-16 19:32:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:32:47,862 INFO L225 Difference]: With dead ends: 992 [2022-11-16 19:32:47,862 INFO L226 Difference]: Without dead ends: 992 [2022-11-16 19:32:47,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-11-16 19:32:47,863 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1377 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:32:47,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 912 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 19:32:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2022-11-16 19:32:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 641. [2022-11-16 19:32:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 552 states have (on average 1.5434782608695652) internal successors, (852), 603 states have internal predecessors, (852), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 20 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-16 19:32:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 920 transitions. [2022-11-16 19:32:47,883 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 920 transitions. Word has length 32 [2022-11-16 19:32:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:32:47,883 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 920 transitions. [2022-11-16 19:32:47,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:32:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 920 transitions. [2022-11-16 19:32:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:32:47,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:32:47,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:32:47,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 19:32:47,885 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:32:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:32:47,885 INFO L85 PathProgramCache]: Analyzing trace with hash -124498081, now seen corresponding path program 1 times [2022-11-16 19:32:47,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:32:47,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413012134] [2022-11-16 19:32:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:47,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:32:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:32:48,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:32:48,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413012134] [2022-11-16 19:32:48,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413012134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:32:48,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471945942] [2022-11-16 19:32:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:48,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:32:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:32:48,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:32:48,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:32:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:48,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 19:32:48,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:32:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:32:48,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:32:48,319 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 19:32:48,319 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 [2022-11-16 19:32:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:32:48,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471945942] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:32:48,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310281441] [2022-11-16 19:32:48,347 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-16 19:32:48,348 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:32:48,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:32:48,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:32:48,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:32:49,097 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 54 for LOIs [2022-11-16 19:32:49,128 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:32:51,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1310281441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:32:51,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:32:51,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 5, 5] total 23 [2022-11-16 19:32:51,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286484188] [2022-11-16 19:32:51,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:32:51,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 19:32:51,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:32:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 19:32:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-11-16 19:32:51,703 INFO L87 Difference]: Start difference. First operand 641 states and 920 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:32:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:32:52,622 INFO L93 Difference]: Finished difference Result 474 states and 662 transitions. [2022-11-16 19:32:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 19:32:52,631 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-16 19:32:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:32:52,633 INFO L225 Difference]: With dead ends: 474 [2022-11-16 19:32:52,633 INFO L226 Difference]: Without dead ends: 474 [2022-11-16 19:32:52,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-11-16 19:32:52,634 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 20 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:32:52,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 286 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 19:32:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-16 19:32:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2022-11-16 19:32:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 397 states have (on average 1.5365239294710327) internal successors, (610), 446 states have internal predecessors, (610), 26 states have call successors, (26), 13 states have call predecessors, (26), 13 states have return successors, (26), 14 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 19:32:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 662 transitions. [2022-11-16 19:32:52,646 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 662 transitions. Word has length 34 [2022-11-16 19:32:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:32:52,647 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 662 transitions. [2022-11-16 19:32:52,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:32:52,647 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 662 transitions. [2022-11-16 19:32:52,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 19:32:52,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:32:52,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:32:52,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 19:32:52,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 19:32:52,853 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:32:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:32:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1448121538, now seen corresponding path program 1 times [2022-11-16 19:32:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:32:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672609942] [2022-11-16 19:32:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:32:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:32:53,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:32:53,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672609942] [2022-11-16 19:32:53,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672609942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:32:53,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:32:53,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 19:32:53,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260244350] [2022-11-16 19:32:53,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:32:53,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 19:32:53,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:32:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 19:32:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 19:32:53,959 INFO L87 Difference]: Start difference. First operand 474 states and 662 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:32:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:32:55,330 INFO L93 Difference]: Finished difference Result 737 states and 1033 transitions. [2022-11-16 19:32:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 19:32:55,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-11-16 19:32:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:32:55,334 INFO L225 Difference]: With dead ends: 737 [2022-11-16 19:32:55,335 INFO L226 Difference]: Without dead ends: 737 [2022-11-16 19:32:55,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-11-16 19:32:55,335 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1286 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:32:55,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 654 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:32:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-16 19:32:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 482. [2022-11-16 19:32:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 405 states have (on average 1.528395061728395) internal successors, (619), 454 states have internal predecessors, (619), 26 states have call successors, (26), 13 states have call predecessors, (26), 13 states have return successors, (26), 14 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 19:32:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 671 transitions. [2022-11-16 19:32:55,349 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 671 transitions. Word has length 33 [2022-11-16 19:32:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:32:55,350 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 671 transitions. [2022-11-16 19:32:55,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:32:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 671 transitions. [2022-11-16 19:32:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:32:55,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:32:55,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:32:55,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 19:32:55,351 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:32:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:32:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -75207655, now seen corresponding path program 1 times [2022-11-16 19:32:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:32:55,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239584773] [2022-11-16 19:32:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:55,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:32:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 19:32:55,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:32:55,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239584773] [2022-11-16 19:32:55,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239584773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:32:55,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:32:55,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:32:55,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701793145] [2022-11-16 19:32:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:32:55,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:32:55,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:32:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:32:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:32:55,460 INFO L87 Difference]: Start difference. First operand 482 states and 671 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:32:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:32:55,527 INFO L93 Difference]: Finished difference Result 594 states and 807 transitions. [2022-11-16 19:32:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:32:55,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-16 19:32:55,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:32:55,530 INFO L225 Difference]: With dead ends: 594 [2022-11-16 19:32:55,530 INFO L226 Difference]: Without dead ends: 594 [2022-11-16 19:32:55,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:32:55,531 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 288 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:32:55,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 171 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:32:55,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-16 19:32:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 481. [2022-11-16 19:32:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 405 states have (on average 1.5135802469135802) internal successors, (613), 453 states have internal predecessors, (613), 26 states have call successors, (26), 13 states have call predecessors, (26), 13 states have return successors, (26), 14 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 19:32:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 665 transitions. [2022-11-16 19:32:55,542 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 665 transitions. Word has length 34 [2022-11-16 19:32:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:32:55,543 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 665 transitions. [2022-11-16 19:32:55,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:32:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 665 transitions. [2022-11-16 19:32:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:32:55,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:32:55,544 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, 1, 1] [2022-11-16 19:32:55,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 19:32:55,544 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:32:55,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:32:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1507416491, now seen corresponding path program 1 times [2022-11-16 19:32:55,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:32:55,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331202714] [2022-11-16 19:32:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:55,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:32:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:32:57,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:32:57,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331202714] [2022-11-16 19:32:57,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331202714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:32:57,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387047095] [2022-11-16 19:32:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:32:57,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:32:57,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:32:57,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:32:57,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 19:32:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:32:57,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 19:32:57,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:32:57,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:57,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:32:57,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:32:57,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:32:58,014 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:32:58,015 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 60 treesize of output 43 [2022-11-16 19:32:58,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:58,555 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 19:32:58,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 19 [2022-11-16 19:32:58,573 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:32:58,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:32:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:32:58,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:32:58,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387047095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:32:58,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516627787] [2022-11-16 19:32:58,873 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-16 19:32:58,873 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:32:58,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:32:58,874 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:32:58,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:32:59,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:32:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,028 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:32:59,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:32:59,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,165 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:32:59,166 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:32:59,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,230 INFO L321 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-16 19:32:59,230 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 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-16 19:32:59,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,263 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:32:59,263 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 257 treesize of output 232 [2022-11-16 19:32:59,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,402 INFO L321 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-16 19:32:59,402 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 5 case distinctions, treesize of input 269 treesize of output 258 [2022-11-16 19:32:59,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,440 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:32:59,441 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 245 treesize of output 220 [2022-11-16 19:32:59,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,520 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:32:59,521 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 9 case distinctions, treesize of input 259 treesize of output 257 [2022-11-16 19:32:59,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,685 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:32:59,686 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 12 case distinctions, treesize of input 274 treesize of output 260 [2022-11-16 19:32:59,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,706 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 235 treesize of output 229 [2022-11-16 19:32:59,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,768 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:32:59,768 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 7 case distinctions, treesize of input 272 treesize of output 261 [2022-11-16 19:32:59,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:32:59,941 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:32:59,941 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 3 case distinctions, treesize of input 254 treesize of output 232 [2022-11-16 19:32:59,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,040 INFO L321 Elim1Store]: treesize reduction 288, result has 11.9 percent of original size [2022-11-16 19:33:00,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 270 treesize of output 260 [2022-11-16 19:33:00,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,133 INFO L321 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-16 19:33:00,133 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 9 case distinctions, treesize of input 268 treesize of output 290 [2022-11-16 19:33:00,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:00,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,406 INFO L321 Elim1Store]: treesize reduction 206, result has 10.0 percent of original size [2022-11-16 19:33:00,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 496 treesize of output 458 [2022-11-16 19:33:00,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:33:00,449 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 2 case distinctions, treesize of input 441 treesize of output 403 [2022-11-16 19:33:00,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:00,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:00,545 INFO L321 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-16 19:33:00,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 487 treesize of output 467 [2022-11-16 19:33:00,896 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:33:00,897 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:33:00,929 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:00,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:00,956 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 26 [2022-11-16 19:33:00,968 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 23 treesize of output 1 [2022-11-16 19:33:00,985 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 26 [2022-11-16 19:33:01,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,017 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 38 treesize of output 40 [2022-11-16 19:33:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,040 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 38 treesize of output 40 [2022-11-16 19:33:01,053 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 23 treesize of output 1 [2022-11-16 19:33:01,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,086 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 53 treesize of output 43 [2022-11-16 19:33:01,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:33:01,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,128 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 53 treesize of output 43 [2022-11-16 19:33:01,176 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 11 [2022-11-16 19:33:01,186 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 23 treesize of output 1 [2022-11-16 19:33:01,198 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 11 [2022-11-16 19:33:01,242 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:33:01,242 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 38 treesize of output 29 [2022-11-16 19:33:01,282 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:33:01,282 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 38 treesize of output 41 [2022-11-16 19:33:01,296 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 23 treesize of output 1 [2022-11-16 19:33:01,740 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:01,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:01,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:33:01,777 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 26 [2022-11-16 19:33:01,794 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 23 treesize of output 1 [2022-11-16 19:33:01,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:33:01,830 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 23 treesize of output 1 [2022-11-16 19:33:01,858 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:01,859 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:01,890 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:01,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:01,968 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:01,969 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:01,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:33:02,055 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:02,056 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:02,297 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 11 [2022-11-16 19:33:02,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:33:02,317 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 23 treesize of output 1 [2022-11-16 19:33:02,373 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:33:02,373 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 38 treesize of output 41 [2022-11-16 19:33:02,399 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:33:02,399 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 38 treesize of output 29 [2022-11-16 19:33:02,414 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 23 treesize of output 1 [2022-11-16 19:33:02,583 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:33:02,583 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:33:02,613 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:02,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:02,643 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 26 [2022-11-16 19:33:02,660 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 26 [2022-11-16 19:33:02,675 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 23 treesize of output 1 [2022-11-16 19:33:02,710 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 23 treesize of output 1 [2022-11-16 19:33:02,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:02,727 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 38 treesize of output 40 [2022-11-16 19:33:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:02,744 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 38 treesize of output 40 [2022-11-16 19:33:02,751 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:33:02,758 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:33:08,167 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28068#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_#t~ret21#1| 2147483648)) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= |#NULL.base| 0) (not (= (select |#valid| |ULTIMATE.start_create_item_~link#1.base|) 1)) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= 0 |~#list~0.offset|) (<= |ULTIMATE.start_main_#t~ret21#1| 2147483647) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-16 19:33:08,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:33:08,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:33:08,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 30 [2022-11-16 19:33:08,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840958266] [2022-11-16 19:33:08,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:33:08,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 19:33:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:33:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 19:33:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 19:33:08,170 INFO L87 Difference]: Start difference. First operand 481 states and 665 transitions. Second operand has 31 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:33:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:33:10,317 INFO L93 Difference]: Finished difference Result 547 states and 742 transitions. [2022-11-16 19:33:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 19:33:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-16 19:33:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:33:10,320 INFO L225 Difference]: With dead ends: 547 [2022-11-16 19:33:10,320 INFO L226 Difference]: Without dead ends: 547 [2022-11-16 19:33:10,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=522, Invalid=5640, Unknown=0, NotChecked=0, Total=6162 [2022-11-16 19:33:10,322 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 167 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:33:10,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1206 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 860 Invalid, 0 Unknown, 326 Unchecked, 0.7s Time] [2022-11-16 19:33:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-16 19:33:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 517. [2022-11-16 19:33:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 437 states have (on average 1.4919908466819223) internal successors, (652), 486 states have internal predecessors, (652), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 16 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 19:33:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 710 transitions. [2022-11-16 19:33:10,334 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 710 transitions. Word has length 34 [2022-11-16 19:33:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:33:10,335 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 710 transitions. [2022-11-16 19:33:10,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:33:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 710 transitions. [2022-11-16 19:33:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:33:10,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:33:10,336 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, 1, 1] [2022-11-16 19:33:10,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 19:33:10,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 19:33:10,542 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:33:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:33:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1507416492, now seen corresponding path program 1 times [2022-11-16 19:33:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:33:10,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034130304] [2022-11-16 19:33:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:33:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:33:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:33:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:33:13,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:33:13,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034130304] [2022-11-16 19:33:13,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034130304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:33:13,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907336836] [2022-11-16 19:33:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:33:13,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:33:13,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:33:13,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:33:13,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 19:33:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:33:13,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-16 19:33:13,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:33:13,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:13,648 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:33:13,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 19:33:13,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:33:14,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:33:14,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 11 [2022-11-16 19:33:14,734 INFO L321 Elim1Store]: treesize reduction 52, result has 54.8 percent of original size [2022-11-16 19:33:14,734 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 113 treesize of output 147 [2022-11-16 19:33:14,774 INFO L321 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-11-16 19:33:14,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 128 [2022-11-16 19:33:16,279 INFO L321 Elim1Store]: treesize reduction 33, result has 54.8 percent of original size [2022-11-16 19:33:16,279 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 139 [2022-11-16 19:33:16,313 INFO L321 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2022-11-16 19:33:16,313 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 17 treesize of output 17 [2022-11-16 19:33:16,349 INFO L321 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2022-11-16 19:33:16,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 111 treesize of output 118 [2022-11-16 19:33:16,431 INFO L321 Elim1Store]: treesize reduction 33, result has 54.8 percent of original size [2022-11-16 19:33:16,432 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 130 treesize of output 115 [2022-11-16 19:33:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:33:17,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:33:22,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907336836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:33:22,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913897606] [2022-11-16 19:33:22,020 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-16 19:33:22,020 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:33:22,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:33:22,021 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:33:22,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:33:22,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:22,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,160 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:33:22,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:33:22,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,297 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:33:22,298 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:33:22,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,333 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:33:22,333 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 257 treesize of output 232 [2022-11-16 19:33:22,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,393 INFO L321 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-16 19:33:22,394 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 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-16 19:33:22,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,533 INFO L321 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-16 19:33:22,533 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 5 case distinctions, treesize of input 269 treesize of output 258 [2022-11-16 19:33:22,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,623 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:33:22,624 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:33:22,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,658 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:33:22,659 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 257 treesize of output 232 [2022-11-16 19:33:22,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,813 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:33:22,813 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 7 case distinctions, treesize of input 284 treesize of output 261 [2022-11-16 19:33:22,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,907 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:33:22,908 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 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-16 19:33:22,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:22,930 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 247 treesize of output 241 [2022-11-16 19:33:23,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,160 INFO L321 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-16 19:33:23,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 290 [2022-11-16 19:33:23,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,248 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:33:23,248 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 9 case distinctions, treesize of input 260 treesize of output 252 [2022-11-16 19:33:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,291 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:33:23,292 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:33:23,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:23,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,565 INFO L321 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-16 19:33:23,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 329 treesize of output 303 [2022-11-16 19:33:23,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:33:23,608 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 2 case distinctions, treesize of input 272 treesize of output 250 [2022-11-16 19:33:23,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:23,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,686 INFO L321 Elim1Store]: treesize reduction 257, result has 8.2 percent of original size [2022-11-16 19:33:23,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 308 treesize of output 273 [2022-11-16 19:33:23,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:23,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:23,980 INFO L321 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-16 19:33:23,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 215 treesize of output 188 [2022-11-16 19:33:24,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:24,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:24,242 INFO L321 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2022-11-16 19:33:24,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 221 treesize of output 188 [2022-11-16 19:33:24,523 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:24,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:24,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:33:24,576 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 26 [2022-11-16 19:33:24,593 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 27 treesize of output 26 [2022-11-16 19:33:24,605 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 23 treesize of output 1 [2022-11-16 19:33:24,657 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:24,658 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:24,679 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 23 treesize of output 1 [2022-11-16 19:33:24,710 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:24,711 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:24,795 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:24,796 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:24,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:33:24,895 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:24,895 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:25,020 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 15 treesize of output 11 [2022-11-16 19:33:25,032 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 11 [2022-11-16 19:33:25,046 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 23 treesize of output 1 [2022-11-16 19:33:25,089 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 23 treesize of output 1 [2022-11-16 19:33:25,122 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:33:25,122 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 38 treesize of output 29 [2022-11-16 19:33:25,158 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:33:25,158 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 38 treesize of output 41 [2022-11-16 19:33:25,609 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:33:25,609 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:33:25,640 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:25,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:25,665 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 23 treesize of output 1 [2022-11-16 19:33:25,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:33:25,697 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 26 [2022-11-16 19:33:25,743 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:25,743 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:25,784 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:25,784 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:25,799 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 23 treesize of output 1 [2022-11-16 19:33:25,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:33:25,892 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:25,892 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:25,972 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:25,973 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:26,213 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 11 [2022-11-16 19:33:26,225 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 11 [2022-11-16 19:33:26,236 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 23 treesize of output 1 [2022-11-16 19:33:26,275 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 23 treesize of output 1 [2022-11-16 19:33:26,299 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:33:26,299 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 38 treesize of output 29 [2022-11-16 19:33:26,333 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:33:26,333 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 38 treesize of output 41 [2022-11-16 19:33:26,530 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:26,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:26,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:33:26,581 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 26 [2022-11-16 19:33:26,593 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 23 treesize of output 1 [2022-11-16 19:33:26,607 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 26 [2022-11-16 19:33:26,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:26,650 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 38 treesize of output 40 [2022-11-16 19:33:26,663 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 23 treesize of output 1 [2022-11-16 19:33:26,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:26,676 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 38 treesize of output 40 [2022-11-16 19:33:26,682 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:33:26,688 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:33:32,733 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29363#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_#t~ret21#1| 2147483648)) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (or (not (<= (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset| 4) (select |#length| |ULTIMATE.start_create_item_~link#1.base|))) (not (<= 0 (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset|)))) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= |ULTIMATE.start_main_#t~ret21#1| 2147483647) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-16 19:33:32,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:33:32,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:33:32,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 31 [2022-11-16 19:33:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49034814] [2022-11-16 19:33:32,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:33:32,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 19:33:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:33:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 19:33:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3084, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 19:33:32,736 INFO L87 Difference]: Start difference. First operand 517 states and 710 transitions. Second operand has 32 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:33:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:33:36,213 INFO L93 Difference]: Finished difference Result 525 states and 715 transitions. [2022-11-16 19:33:36,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 19:33:36,215 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-16 19:33:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:33:36,218 INFO L225 Difference]: With dead ends: 525 [2022-11-16 19:33:36,218 INFO L226 Difference]: Without dead ends: 525 [2022-11-16 19:33:36,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=337, Invalid=4355, Unknown=0, NotChecked=0, Total=4692 [2022-11-16 19:33:36,219 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 103 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:33:36,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1236 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1225 Invalid, 0 Unknown, 266 Unchecked, 1.3s Time] [2022-11-16 19:33:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-16 19:33:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 520. [2022-11-16 19:33:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 439 states have (on average 1.489749430523918) internal successors, (654), 488 states have internal predecessors, (654), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (29), 16 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 19:33:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 712 transitions. [2022-11-16 19:33:36,231 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 712 transitions. Word has length 34 [2022-11-16 19:33:36,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:33:36,232 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 712 transitions. [2022-11-16 19:33:36,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:33:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 712 transitions. [2022-11-16 19:33:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 19:33:36,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:33:36,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:33:36,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 19:33:36,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 19:33:36,439 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:33:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:33:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash -71003380, now seen corresponding path program 1 times [2022-11-16 19:33:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:33:36,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18715277] [2022-11-16 19:33:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:33:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:33:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:33:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 19:33:37,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:33:37,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18715277] [2022-11-16 19:33:37,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18715277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:33:37,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:33:37,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 19:33:37,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806615625] [2022-11-16 19:33:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:33:37,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 19:33:37,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:33:37,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 19:33:37,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:33:37,242 INFO L87 Difference]: Start difference. First operand 520 states and 712 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:33:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:33:38,324 INFO L93 Difference]: Finished difference Result 934 states and 1259 transitions. [2022-11-16 19:33:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 19:33:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-11-16 19:33:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:33:38,327 INFO L225 Difference]: With dead ends: 934 [2022-11-16 19:33:38,327 INFO L226 Difference]: Without dead ends: 934 [2022-11-16 19:33:38,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2022-11-16 19:33:38,328 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 630 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:33:38,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 612 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:33:38,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-11-16 19:33:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 808. [2022-11-16 19:33:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 700 states have (on average 1.502857142857143) internal successors, (1052), 756 states have internal predecessors, (1052), 47 states have call successors, (47), 24 states have call predecessors, (47), 24 states have return successors, (47), 27 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-16 19:33:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1146 transitions. [2022-11-16 19:33:38,349 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1146 transitions. Word has length 33 [2022-11-16 19:33:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:33:38,349 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1146 transitions. [2022-11-16 19:33:38,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:33:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1146 transitions. [2022-11-16 19:33:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:33:38,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:33:38,350 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, 1, 1] [2022-11-16 19:33:38,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 19:33:38,350 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:33:38,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:33:38,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1885851571, now seen corresponding path program 1 times [2022-11-16 19:33:38,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:33:38,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423867654] [2022-11-16 19:33:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:33:38,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:33:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:33:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:33:40,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:33:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423867654] [2022-11-16 19:33:40,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423867654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:33:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012901033] [2022-11-16 19:33:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:33:40,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:33:40,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:33:40,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:33:40,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 19:33:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:33:40,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-16 19:33:40,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:33:40,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:33:40,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:40,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:33:40,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 11 [2022-11-16 19:33:41,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:41,101 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 60 treesize of output 35 [2022-11-16 19:33:41,412 INFO L321 Elim1Store]: treesize reduction 36, result has 37.9 percent of original size [2022-11-16 19:33:41,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 33 [2022-11-16 19:33:41,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:41,425 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 19:33:41,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 19 [2022-11-16 19:33:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:33:41,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:33:41,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012901033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:33:41,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [470680664] [2022-11-16 19:33:41,739 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-16 19:33:41,739 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:33:41,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:33:41,740 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:33:41,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:33:41,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:41,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:41,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:41,885 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:33:41,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:33:41,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,000 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:33:42,000 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:33:42,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,061 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:33:42,062 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:33:42,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,094 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:33:42,095 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 257 treesize of output 232 [2022-11-16 19:33:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,253 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:33:42,253 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:33:42,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,341 INFO L321 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-16 19:33:42,341 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 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-16 19:33:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,376 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:33:42,376 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 257 treesize of output 232 [2022-11-16 19:33:42,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,514 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:33:42,514 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 7 case distinctions, treesize of input 282 treesize of output 261 [2022-11-16 19:33:42,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,610 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:33:42,610 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 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-16 19:33:42,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 241 [2022-11-16 19:33:42,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,832 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:33:42,832 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 3 case distinctions, treesize of input 266 treesize of output 244 [2022-11-16 19:33:42,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:42,958 INFO L321 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-16 19:33:42,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 290 [2022-11-16 19:33:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,052 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:33:43,052 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 9 case distinctions, treesize of input 258 treesize of output 252 [2022-11-16 19:33:43,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:33:43,543 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 2 case distinctions, treesize of input 694 treesize of output 640 [2022-11-16 19:33:43,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:43,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:43,631 INFO L321 Elim1Store]: treesize reduction 212, result has 9.8 percent of original size [2022-11-16 19:33:43,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 753 treesize of output 707 [2022-11-16 19:33:43,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:43,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:43,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:43,730 INFO L321 Elim1Store]: treesize reduction 266, result has 8.9 percent of original size [2022-11-16 19:33:43,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 684 treesize of output 630 [2022-11-16 19:33:44,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:44,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:44,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:44,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:44,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:44,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-16 19:33:44,179 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:33:44,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:44,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:44,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:44,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:44,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:44,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-16 19:33:44,353 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:33:44,573 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:33:44,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:33:44,607 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:44,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:44,635 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 23 treesize of output 1 [2022-11-16 19:33:44,653 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 26 [2022-11-16 19:33:44,664 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 26 [2022-11-16 19:33:44,693 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 23 treesize of output 1 [2022-11-16 19:33:44,726 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:44,727 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:44,759 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:44,760 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:44,838 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:44,838 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:44,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:33:44,915 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:44,915 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:45,184 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 23 treesize of output 1 [2022-11-16 19:33:45,193 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 11 [2022-11-16 19:33:45,205 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 11 [2022-11-16 19:33:45,286 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 23 treesize of output 1 [2022-11-16 19:33:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:45,320 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:33:45,320 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 63 treesize of output 57 [2022-11-16 19:33:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:45,355 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:33:45,355 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 63 treesize of output 69 [2022-11-16 19:33:45,768 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:33:45,768 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:33:45,816 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:45,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:45,848 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 23 treesize of output 1 [2022-11-16 19:33:45,859 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 26 [2022-11-16 19:33:45,876 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 26 [2022-11-16 19:33:45,930 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:45,930 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:45,945 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 23 treesize of output 1 [2022-11-16 19:33:45,984 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:33:45,985 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:33:46,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:33:46,090 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:46,090 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:46,167 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:33:46,167 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:33:46,280 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 23 treesize of output 1 [2022-11-16 19:33:46,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:33:46,298 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 15 treesize of output 11 [2022-11-16 19:33:46,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:33:46,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:46,396 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:33:46,396 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 63 treesize of output 69 [2022-11-16 19:33:46,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:46,434 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:33:46,434 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 63 treesize of output 57 [2022-11-16 19:33:46,624 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:33:46,624 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:33:46,655 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:33:46,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:33:46,689 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 26 [2022-11-16 19:33:46,702 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 23 treesize of output 1 [2022-11-16 19:33:46,720 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 26 [2022-11-16 19:33:46,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:46,753 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 38 treesize of output 40 [2022-11-16 19:33:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:46,768 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 38 treesize of output 40 [2022-11-16 19:33:46,790 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 23 treesize of output 1 [2022-11-16 19:33:46,810 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:33:46,825 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:33:52,439 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32386#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_#t~ret21#1| 2147483648)) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (not (= (select |#valid| |ULTIMATE.start_create_item_~link#1.base|) 1)) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= |ULTIMATE.start_main_#t~ret21#1| 2147483647) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-16 19:33:52,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:33:52,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:33:52,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 33 [2022-11-16 19:33:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375410650] [2022-11-16 19:33:52,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:33:52,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 19:33:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:33:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 19:33:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3010, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 19:33:52,441 INFO L87 Difference]: Start difference. First operand 808 states and 1146 transitions. Second operand has 34 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:34:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:01,144 INFO L93 Difference]: Finished difference Result 2280 states and 3189 transitions. [2022-11-16 19:34:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-16 19:34:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-16 19:34:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:01,151 INFO L225 Difference]: With dead ends: 2280 [2022-11-16 19:34:01,151 INFO L226 Difference]: Without dead ends: 2280 [2022-11-16 19:34:01,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3744 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1929, Invalid=10281, Unknown=0, NotChecked=0, Total=12210 [2022-11-16 19:34:01,153 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 2179 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 4632 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 4632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:01,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 2610 Invalid, 4894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 4632 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 19:34:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-11-16 19:34:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 811. [2022-11-16 19:34:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 703 states have (on average 1.5021337126600285) internal successors, (1056), 756 states have internal predecessors, (1056), 47 states have call successors, (47), 24 states have call predecessors, (47), 24 states have return successors, (47), 30 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-16 19:34:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1150 transitions. [2022-11-16 19:34:01,182 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1150 transitions. Word has length 34 [2022-11-16 19:34:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:01,182 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1150 transitions. [2022-11-16 19:34:01,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:34:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1150 transitions. [2022-11-16 19:34:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:34:01,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:01,183 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, 1, 1] [2022-11-16 19:34:01,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:34:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 19:34:01,394 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:34:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1885851572, now seen corresponding path program 1 times [2022-11-16 19:34:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:01,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415066039] [2022-11-16 19:34:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:34:03,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:03,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415066039] [2022-11-16 19:34:03,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415066039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:34:03,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241711198] [2022-11-16 19:34:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:03,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:34:03,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:34:03,892 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:34:03,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 19:34:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:04,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-16 19:34:04,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:34:04,284 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:04,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:04,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 19:34:04,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:04,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:34:04,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:04,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:34:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:04,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:34:04,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:04,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:34:04,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:04,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:34:04,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:04,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:34:04,713 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 19:34:04,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 30 [2022-11-16 19:34:04,728 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 19:34:04,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 19:34:05,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:05,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:05,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2022-11-16 19:34:05,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:05,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 19:34:05,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:05,869 INFO L321 Elim1Store]: treesize reduction 20, result has 13.0 percent of original size [2022-11-16 19:34:05,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 13 [2022-11-16 19:34:05,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:05,894 INFO L321 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-11-16 19:34:05,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 19:34:05,907 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 19:34:05,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 35 [2022-11-16 19:34:05,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:05,929 INFO L321 Elim1Store]: treesize reduction 20, result has 13.0 percent of original size [2022-11-16 19:34:05,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 19 [2022-11-16 19:34:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:34:06,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:34:06,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241711198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:34:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [63651099] [2022-11-16 19:34:06,849 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-16 19:34:06,849 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:34:06,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:34:06,850 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:34:06,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:34:06,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:06,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:06,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:06,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:06,987 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:34:06,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:34:07,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,079 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:34:07,079 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 257 treesize of output 232 [2022-11-16 19:34:07,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,145 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:34:07,146 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:34:07,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,209 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:34:07,209 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:34:07,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,367 INFO L321 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-16 19:34:07,367 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 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-16 19:34:07,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,406 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:34:07,406 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 257 treesize of output 232 [2022-11-16 19:34:07,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,492 INFO L321 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-16 19:34:07,492 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 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-16 19:34:07,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,631 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:34:07,631 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 7 case distinctions, treesize of input 282 treesize of output 261 [2022-11-16 19:34:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,692 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:34:07,693 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 7 case distinctions, treesize of input 282 treesize of output 261 [2022-11-16 19:34:07,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,714 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 239 treesize of output 233 [2022-11-16 19:34:07,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,917 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:34:07,917 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 9 case distinctions, treesize of input 278 treesize of output 272 [2022-11-16 19:34:07,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:07,960 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:34:07,961 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 3 case distinctions, treesize of input 266 treesize of output 244 [2022-11-16 19:34:07,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,054 INFO L321 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-16 19:34:08,054 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 9 case distinctions, treesize of input 278 treesize of output 290 [2022-11-16 19:34:08,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:08,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:08,374 INFO L321 Elim1Store]: treesize reduction 258, result has 11.6 percent of original size [2022-11-16 19:34:08,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 345 treesize of output 323 [2022-11-16 19:34:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:34:08,416 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 2 case distinctions, treesize of input 240 treesize of output 218 [2022-11-16 19:34:08,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:08,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:08,498 INFO L321 Elim1Store]: treesize reduction 269, result has 7.9 percent of original size [2022-11-16 19:34:08,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 295 treesize of output 254 [2022-11-16 19:34:08,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:08,746 INFO L321 Elim1Store]: treesize reduction 80, result has 12.1 percent of original size [2022-11-16 19:34:08,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 193 treesize of output 165 [2022-11-16 19:34:08,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:08,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:08,983 INFO L321 Elim1Store]: treesize reduction 80, result has 12.1 percent of original size [2022-11-16 19:34:08,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 193 treesize of output 165 [2022-11-16 19:34:09,227 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:09,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:09,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:34:09,261 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 26 [2022-11-16 19:34:09,276 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 26 [2022-11-16 19:34:09,288 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 23 treesize of output 1 [2022-11-16 19:34:09,327 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:09,327 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:34:09,345 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 23 treesize of output 1 [2022-11-16 19:34:09,393 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:09,393 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:34:09,476 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:09,476 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:34:09,554 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:09,554 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:34:09,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:09,660 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 11 [2022-11-16 19:34:09,669 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 23 treesize of output 1 [2022-11-16 19:34:09,678 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 11 [2022-11-16 19:34:09,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:09,763 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:34:09,763 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 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-16 19:34:09,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:09,791 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:34:09,792 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 63 treesize of output 57 [2022-11-16 19:34:09,812 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 23 treesize of output 1 [2022-11-16 19:34:10,237 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:34:10,237 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:34:10,271 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:10,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:10,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:34:10,325 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 23 treesize of output 1 [2022-11-16 19:34:10,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:34:10,385 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:10,385 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:34:10,408 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 23 treesize of output 1 [2022-11-16 19:34:10,437 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:10,438 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 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-16 19:34:10,520 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:10,520 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:34:10,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:10,620 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:10,620 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 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-16 19:34:10,723 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 23 treesize of output 1 [2022-11-16 19:34:10,734 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 11 [2022-11-16 19:34:10,743 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 11 [2022-11-16 19:34:10,806 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 23 treesize of output 1 [2022-11-16 19:34:10,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:10,849 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:34:10,849 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 63 treesize of output 69 [2022-11-16 19:34:10,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:10,877 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:34:10,877 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 63 treesize of output 57 [2022-11-16 19:34:11,065 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:11,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:11,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:34:11,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:34:11,125 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 26 [2022-11-16 19:34:11,138 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 23 treesize of output 1 [2022-11-16 19:34:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:11,168 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 38 treesize of output 40 [2022-11-16 19:34:11,191 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 23 treesize of output 1 [2022-11-16 19:34:11,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:11,203 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 38 treesize of output 40 [2022-11-16 19:34:11,220 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:34:11,227 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:34:16,901 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35762#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_#t~ret21#1| 2147483648)) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (or (not (<= (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset| 4) (select |#length| |ULTIMATE.start_create_item_~link#1.base|))) (not (<= 0 (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset|)))) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= |ULTIMATE.start_main_#t~ret21#1| 2147483647) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-16 19:34:16,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:34:16,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:34:16,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 29 [2022-11-16 19:34:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600092921] [2022-11-16 19:34:16,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:34:16,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 19:34:16,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:34:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 19:34:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2706, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 19:34:16,904 INFO L87 Difference]: Start difference. First operand 811 states and 1150 transitions. Second operand has 30 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:34:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:23,570 INFO L93 Difference]: Finished difference Result 1542 states and 2143 transitions. [2022-11-16 19:34:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 19:34:23,571 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-16 19:34:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:23,577 INFO L225 Difference]: With dead ends: 1542 [2022-11-16 19:34:23,577 INFO L226 Difference]: Without dead ends: 1542 [2022-11-16 19:34:23,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2529 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=709, Invalid=7301, Unknown=0, NotChecked=0, Total=8010 [2022-11-16 19:34:23,579 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 550 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:23,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2077 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2220 Invalid, 0 Unknown, 420 Unchecked, 2.1s Time] [2022-11-16 19:34:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-11-16 19:34:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1351. [2022-11-16 19:34:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1189 states have (on average 1.5231286795626577) internal successors, (1811), 1254 states have internal predecessors, (1811), 83 states have call successors, (83), 42 states have call predecessors, (83), 42 states have return successors, (83), 54 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-16 19:34:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1977 transitions. [2022-11-16 19:34:23,607 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1977 transitions. Word has length 34 [2022-11-16 19:34:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:23,608 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 1977 transitions. [2022-11-16 19:34:23,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:34:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1977 transitions. [2022-11-16 19:34:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:34:23,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:23,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:34:23,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:34:23,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:34:23,815 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:34:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1715427699, now seen corresponding path program 1 times [2022-11-16 19:34:23,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:23,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892863746] [2022-11-16 19:34:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:34:25,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:25,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892863746] [2022-11-16 19:34:25,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892863746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:34:25,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657013629] [2022-11-16 19:34:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:25,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:34:25,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:34:25,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:34:25,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 19:34:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:25,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 19:34:25,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:34:25,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:25,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:34:26,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 11 [2022-11-16 19:34:26,437 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:34:26,437 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 58 treesize of output 41 [2022-11-16 19:34:26,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:26,876 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 19:34:26,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 17 [2022-11-16 19:34:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:34:26,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:34:27,467 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:34:27,468 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 265 treesize of output 267 [2022-11-16 19:34:27,488 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 32 treesize of output 26 [2022-11-16 19:34:27,525 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-16 19:34:27,526 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 290 treesize of output 296 [2022-11-16 19:34:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:34:29,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657013629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:34:29,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1252850990] [2022-11-16 19:34:29,583 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-16 19:34:29,583 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:34:29,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:34:29,584 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:34:29,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:34:29,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:29,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:29,716 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:34:29,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:34:29,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:29,883 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:34:29,883 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:34:29,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:29,952 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:34:29,953 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:34:29,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:29,987 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:34:29,987 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 257 treesize of output 232 [2022-11-16 19:34:30,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,139 INFO L321 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-16 19:34:30,139 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 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-16 19:34:30,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,226 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:34:30,227 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:34:30,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,259 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:34:30,260 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 257 treesize of output 232 [2022-11-16 19:34:30,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,430 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:34:30,430 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 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-16 19:34:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,509 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:34:30,509 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 7 case distinctions, treesize of input 282 treesize of output 261 [2022-11-16 19:34:30,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,531 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 247 treesize of output 241 [2022-11-16 19:34:30,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,735 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:34:30,736 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 9 case distinctions, treesize of input 278 treesize of output 272 [2022-11-16 19:34:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,782 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:34:30,783 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 3 case distinctions, treesize of input 258 treesize of output 236 [2022-11-16 19:34:30,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:30,879 INFO L321 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-16 19:34:30,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 274 treesize of output 282 [2022-11-16 19:34:31,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:31,321 INFO L321 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-16 19:34:31,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 721 treesize of output 675 [2022-11-16 19:34:31,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:31,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:31,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:31,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:31,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:34:31,371 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 2 case distinctions, treesize of input 666 treesize of output 612 [2022-11-16 19:34:31,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:31,456 INFO L321 Elim1Store]: treesize reduction 257, result has 8.2 percent of original size [2022-11-16 19:34:31,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 700 treesize of output 651 [2022-11-16 19:34:31,994 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:34:32,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:32,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:32,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:32,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:32,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:32,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-16 19:34:32,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:32,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:32,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:32,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:32,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:32,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-16 19:34:32,191 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:34:32,450 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:34:32,451 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:34:32,493 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:32,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:32,528 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 11 [2022-11-16 19:34:32,536 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 11 [2022-11-16 19:34:32,545 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 23 treesize of output 1 [2022-11-16 19:34:32,578 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:32,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:32,590 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 23 treesize of output 1 [2022-11-16 19:34:32,613 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:32,613 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:32,673 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:32,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:32,739 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:32,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:32,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:32,858 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 11 [2022-11-16 19:34:32,868 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 23 treesize of output 1 [2022-11-16 19:34:32,879 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 11 [2022-11-16 19:34:33,063 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 23 treesize of output 1 [2022-11-16 19:34:33,095 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:34:33,095 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 38 treesize of output 41 [2022-11-16 19:34:33,123 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:34:33,123 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 38 treesize of output 29 [2022-11-16 19:34:34,052 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:34,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:34,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:34:34,084 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 23 treesize of output 1 [2022-11-16 19:34:34,091 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 11 [2022-11-16 19:34:34,099 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 11 [2022-11-16 19:34:34,128 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:34,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:34,158 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:34,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:34,169 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 23 treesize of output 1 [2022-11-16 19:34:34,226 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:34,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:34,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:34,294 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:34,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:34,402 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 23 treesize of output 1 [2022-11-16 19:34:34,412 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 11 [2022-11-16 19:34:34,423 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 11 [2022-11-16 19:34:34,615 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:34:34,615 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 38 treesize of output 29 [2022-11-16 19:34:34,649 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:34:34,649 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 38 treesize of output 41 [2022-11-16 19:34:34,664 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 23 treesize of output 1 [2022-11-16 19:34:34,964 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:34:34,965 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:34:34,997 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:34,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:35,032 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 26 [2022-11-16 19:34:35,044 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 23 treesize of output 1 [2022-11-16 19:34:35,055 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 26 [2022-11-16 19:34:35,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,083 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 38 treesize of output 40 [2022-11-16 19:34:35,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,097 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 38 treesize of output 40 [2022-11-16 19:34:35,118 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 23 treesize of output 1 [2022-11-16 19:34:35,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,151 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 53 treesize of output 43 [2022-11-16 19:34:35,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,172 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 53 treesize of output 43 [2022-11-16 19:34:35,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:35,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:34:35,269 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 33 treesize of output 13 [2022-11-16 19:34:35,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:34:35,356 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 33 treesize of output 13 [2022-11-16 19:34:35,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,402 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:34:35,403 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 2 case distinctions, treesize of input 60 treesize of output 57 [2022-11-16 19:34:35,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:35,443 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:34:35,444 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 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-16 19:34:35,817 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:34:35,817 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:34:35,847 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:35,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:35,879 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 11 [2022-11-16 19:34:35,888 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 23 treesize of output 1 [2022-11-16 19:34:35,896 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 11 [2022-11-16 19:34:35,930 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:35,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:35,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:34:35,965 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:35,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:35,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:36,034 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:36,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:36,094 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:36,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:36,215 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 23 treesize of output 1 [2022-11-16 19:34:36,225 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 11 [2022-11-16 19:34:36,235 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 11 [2022-11-16 19:34:36,421 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:34:36,421 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 38 treesize of output 29 [2022-11-16 19:34:36,433 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 23 treesize of output 1 [2022-11-16 19:34:36,466 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:34:36,466 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 38 treesize of output 41 [2022-11-16 19:34:37,352 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:37,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:37,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:34:37,384 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 11 [2022-11-16 19:34:37,392 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 23 treesize of output 1 [2022-11-16 19:34:37,400 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 11 [2022-11-16 19:34:37,417 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 23 treesize of output 1 [2022-11-16 19:34:37,440 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:37,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:37,464 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:37,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:37,527 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:37,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:37,584 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:37,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:37,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:37,721 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 11 [2022-11-16 19:34:37,732 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 11 [2022-11-16 19:34:37,797 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 23 treesize of output 1 [2022-11-16 19:34:37,931 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:34:37,931 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 38 treesize of output 41 [2022-11-16 19:34:37,958 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:34:37,959 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 38 treesize of output 29 [2022-11-16 19:34:37,971 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 23 treesize of output 1 [2022-11-16 19:34:38,257 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:34:38,257 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:34:38,291 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:38,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:38,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 19:34:38,346 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 26 [2022-11-16 19:34:38,360 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 23 treesize of output 1 [2022-11-16 19:34:38,391 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 23 treesize of output 1 [2022-11-16 19:34:38,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,404 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 38 treesize of output 40 [2022-11-16 19:34:38,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,421 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 38 treesize of output 40 [2022-11-16 19:34:38,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,457 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 53 treesize of output 43 [2022-11-16 19:34:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2022-11-16 19:34:38,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:38,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:34:38,577 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 33 treesize of output 13 [2022-11-16 19:34:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:34:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,671 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:34:38,672 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 2 case distinctions, treesize of input 60 treesize of output 57 [2022-11-16 19:34:38,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:38,720 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:34:38,720 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 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-16 19:34:38,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 19:34:39,101 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:34:39,102 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:34:39,155 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:39,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:39,199 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 11 [2022-11-16 19:34:39,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:34:39,215 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 11 [2022-11-16 19:34:39,254 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:39,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:39,267 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 23 treesize of output 1 [2022-11-16 19:34:39,293 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:39,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:39,361 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:39,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:39,431 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:39,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:39,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:39,564 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:34:39,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:34:39,658 INFO L321 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-16 19:34:39,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-16 19:34:39,749 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:34:39,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:34:40,080 INFO L321 Elim1Store]: treesize reduction 176, result has 30.7 percent of original size [2022-11-16 19:34:40,080 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 236 [2022-11-16 19:34:40,371 INFO L321 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-11-16 19:34:40,371 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 354 treesize of output 279 [2022-11-16 19:34:40,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:40,431 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 47 treesize of output 27 [2022-11-16 19:34:53,984 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:34:53,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:34:53,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:34:54,017 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 11 [2022-11-16 19:34:54,026 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 23 treesize of output 1 [2022-11-16 19:34:54,034 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 11 [2022-11-16 19:34:54,056 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 23 treesize of output 1 [2022-11-16 19:34:54,081 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:54,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:54,108 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:34:54,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:34:54,173 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:54,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:54,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:34:54,242 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:34:54,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:34:54,387 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:34:54,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:34:54,540 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:34:54,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:34:54,640 INFO L321 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-16 19:34:54,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-16 19:34:54,874 INFO L321 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-11-16 19:34:54,875 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 270 treesize of output 211 [2022-11-16 19:34:55,020 INFO L321 Elim1Store]: treesize reduction 176, result has 30.7 percent of original size [2022-11-16 19:34:55,020 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 337 treesize of output 314 [2022-11-16 19:34:55,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:55,195 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 47 treesize of output 27 [2022-11-16 19:35:13,185 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:35:13,192 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:35:21,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38983#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (not (< |ULTIMATE.start_main_~cursor~0#1.base| |#StackHeapBarrier|)) (= (select |#valid| |~#list~0.base|) 1) (= |ULTIMATE.start_main_~next~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|))) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (= (select |#valid| |ULTIMATE.start_main_~cursor~0#1.base|) 1) (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|)) (<= |#NULL.base| 0) (= |ULTIMATE.start_main_~next~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|))) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0)) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:35:21,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:35:21,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:35:21,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 12] total 37 [2022-11-16 19:35:21,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150301045] [2022-11-16 19:35:21,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:35:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 19:35:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 19:35:21,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3562, Unknown=0, NotChecked=0, Total=3782 [2022-11-16 19:35:21,600 INFO L87 Difference]: Start difference. First operand 1351 states and 1977 transitions. Second operand has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 38 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:35:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:24,190 INFO L93 Difference]: Finished difference Result 1358 states and 1984 transitions. [2022-11-16 19:35:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 19:35:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 38 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2022-11-16 19:35:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:24,194 INFO L225 Difference]: With dead ends: 1358 [2022-11-16 19:35:24,194 INFO L226 Difference]: Without dead ends: 1358 [2022-11-16 19:35:24,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=372, Invalid=4598, Unknown=0, NotChecked=0, Total=4970 [2022-11-16 19:35:24,195 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 144 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:24,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1741 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1205 Invalid, 0 Unknown, 121 Unchecked, 1.3s Time] [2022-11-16 19:35:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-11-16 19:35:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1357. [2022-11-16 19:35:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1195 states have (on average 1.5205020920502093) internal successors, (1817), 1260 states have internal predecessors, (1817), 83 states have call successors, (83), 42 states have call predecessors, (83), 42 states have return successors, (83), 54 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-16 19:35:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1983 transitions. [2022-11-16 19:35:24,221 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1983 transitions. Word has length 34 [2022-11-16 19:35:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:24,222 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1983 transitions. [2022-11-16 19:35:24,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 38 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:35:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1983 transitions. [2022-11-16 19:35:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 19:35:24,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:24,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:35:24,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:35:24,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:35:24,429 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:35:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1963530153, now seen corresponding path program 1 times [2022-11-16 19:35:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:24,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61603530] [2022-11-16 19:35:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:35:25,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:25,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61603530] [2022-11-16 19:35:25,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61603530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:35:25,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285585105] [2022-11-16 19:35:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:25,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:35:25,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:35:25,950 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:35:25,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 19:35:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:26,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 19:35:26,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:35:26,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:26,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:35:26,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 11 [2022-11-16 19:35:26,607 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-16 19:35:26,607 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 39 treesize of output 34 [2022-11-16 19:35:26,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:26,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:26,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:27,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:35:27,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 124 [2022-11-16 19:35:27,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:27,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 49 [2022-11-16 19:35:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:35:27,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:35:27,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:27,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:35:27,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 83 [2022-11-16 19:35:27,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285585105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:35:27,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1490491563] [2022-11-16 19:35:27,708 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-16 19:35:27,709 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:35:27,709 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:35:27,709 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:35:27,709 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:35:27,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:27,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:27,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:27,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:27,830 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:35:27,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:35:27,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:27,971 INFO L321 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-16 19:35:27,971 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 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-16 19:35:27,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,006 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:35:28,006 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 257 treesize of output 232 [2022-11-16 19:35:28,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,070 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:35:28,070 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:35:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,232 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:35:28,232 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:35:28,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,297 INFO L321 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-16 19:35:28,297 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 5 case distinctions, treesize of input 269 treesize of output 258 [2022-11-16 19:35:28,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,334 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:35:28,334 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 257 treesize of output 232 [2022-11-16 19:35:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,418 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 247 treesize of output 241 [2022-11-16 19:35:28,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,493 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:35:28,493 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 7 case distinctions, treesize of input 284 treesize of output 261 [2022-11-16 19:35:28,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,579 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:35:28,580 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 12 case distinctions, treesize of input 274 treesize of output 260 [2022-11-16 19:35:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,786 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:35:28,786 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 9 case distinctions, treesize of input 280 treesize of output 272 [2022-11-16 19:35:28,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,891 INFO L321 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-16 19:35:28,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 290 [2022-11-16 19:35:28,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:28,931 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:35:28,931 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:35:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:29,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,321 INFO L321 Elim1Store]: treesize reduction 206, result has 10.0 percent of original size [2022-11-16 19:35:29,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 754 treesize of output 690 [2022-11-16 19:35:29,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,442 INFO L321 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-16 19:35:29,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 703 treesize of output 657 [2022-11-16 19:35:29,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:29,483 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:35:29,483 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 2 case distinctions, treesize of input 648 treesize of output 594 [2022-11-16 19:35:30,022 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:35:30,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:30,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:30,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:30,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:30,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:30,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-16 19:35:30,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:30,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:30,327 INFO L321 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-16 19:35:30,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 603 treesize of output 472 [2022-11-16 19:35:30,985 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:35:30,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:35:30,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:35:31,029 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 15 treesize of output 11 [2022-11-16 19:35:31,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:35:31,044 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 11 [2022-11-16 19:35:31,093 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:31,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:31,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:35:31,127 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:31,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:31,191 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:31,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:31,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:35:31,261 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:31,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:31,367 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 11 [2022-11-16 19:35:31,377 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 23 treesize of output 1 [2022-11-16 19:35:31,388 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 15 treesize of output 11 [2022-11-16 19:35:31,552 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 23 treesize of output 1 [2022-11-16 19:35:31,576 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:35:31,577 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 38 treesize of output 29 [2022-11-16 19:35:31,679 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:35:31,679 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 38 treesize of output 41 [2022-11-16 19:35:32,478 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:35:32,478 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:35:32,508 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:35:32,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:35:32,528 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 23 treesize of output 1 [2022-11-16 19:35:32,535 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 11 [2022-11-16 19:35:32,542 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 11 [2022-11-16 19:35:32,562 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 23 treesize of output 1 [2022-11-16 19:35:32,584 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:32,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:32,610 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:32,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:32,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:35:32,681 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:32,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:32,742 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:32,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:32,871 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 11 [2022-11-16 19:35:32,881 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 11 [2022-11-16 19:35:32,891 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 23 treesize of output 1 [2022-11-16 19:35:33,083 INFO L321 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-16 19:35:33,083 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 38 treesize of output 41 [2022-11-16 19:35:33,096 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 23 treesize of output 1 [2022-11-16 19:35:33,177 INFO L321 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-16 19:35:33,178 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 38 treesize of output 29 [2022-11-16 19:35:33,586 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:35:33,593 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:35:41,281 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '41900#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= |ULTIMATE.start_is_empty_~no_beg~0#1| (ite (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0)) 1 0)) (= |ULTIMATE.start_is_empty_~list#1.base| |ULTIMATE.start_is_empty_#in~list#1.base|) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_main_#t~ret23#1|) (= |ULTIMATE.start_remove_one_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (= |ULTIMATE.start_is_empty_~no_end~0#1| (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0)) 1 0)) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_remove_one_~from#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_remove_one_#in~list#1.base| |~#list~0.base|) (<= (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset| 4) (select |#length| |ULTIMATE.start_is_empty_~list#1.base|)) (<= |#NULL.base| 0) (= |~#list~0.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| |ULTIMATE.start_is_empty_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| 0) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret23#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret23#1|)) (<= 0 |~#list~0.offset|) (= |ULTIMATE.start_is_empty_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (<= 3 |~#list~0.base|) (= (select |#valid| |ULTIMATE.start_is_empty_~list#1.base|) 1) (<= 0 |#NULL.offset|) (not (= |ULTIMATE.start_is_empty_~no_end~0#1| |ULTIMATE.start_is_empty_~no_beg~0#1|)) (= |ULTIMATE.start_remove_one_~list#1.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (<= 0 |#StackHeapBarrier|) (not (< |ULTIMATE.start_is_empty_~list#1.base| |#StackHeapBarrier|)) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:35:41,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:35:41,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:35:41,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 31 [2022-11-16 19:35:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509623082] [2022-11-16 19:35:41,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:35:41,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 19:35:41,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:41,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 19:35:41,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3422, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 19:35:41,283 INFO L87 Difference]: Start difference. First operand 1357 states and 1983 transitions. Second operand has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:35:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:43,139 INFO L93 Difference]: Finished difference Result 2128 states and 3142 transitions. [2022-11-16 19:35:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 19:35:43,139 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2022-11-16 19:35:43,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:43,147 INFO L225 Difference]: With dead ends: 2128 [2022-11-16 19:35:43,147 INFO L226 Difference]: Without dead ends: 2127 [2022-11-16 19:35:43,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=374, Invalid=5028, Unknown=0, NotChecked=0, Total=5402 [2022-11-16 19:35:43,148 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 225 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:43,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2045 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1050 Invalid, 0 Unknown, 181 Unchecked, 0.9s Time] [2022-11-16 19:35:43,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-11-16 19:35:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1394. [2022-11-16 19:35:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1227 states have (on average 1.5118174409127954) internal successors, (1855), 1293 states have internal predecessors, (1855), 86 states have call successors, (86), 44 states have call predecessors, (86), 44 states have return successors, (86), 56 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 19:35:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2027 transitions. [2022-11-16 19:35:43,181 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2027 transitions. Word has length 35 [2022-11-16 19:35:43,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:43,181 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 2027 transitions. [2022-11-16 19:35:43,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:35:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2027 transitions. [2022-11-16 19:35:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:35:43,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:43,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:35:43,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 19:35:43,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-16 19:35:43,389 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:35:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2093862779, now seen corresponding path program 1 times [2022-11-16 19:35:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:43,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104413866] [2022-11-16 19:35:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:35:45,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:45,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104413866] [2022-11-16 19:35:45,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104413866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:35:45,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199451298] [2022-11-16 19:35:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:45,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:35:45,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:35:45,282 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:35:45,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 19:35:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:45,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 19:35:45,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:35:45,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:45,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 19:35:45,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 11 [2022-11-16 19:35:46,190 INFO L321 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-16 19:35:46,190 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 58 treesize of output 41 [2022-11-16 19:35:46,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:46,550 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 19:35:46,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 17 [2022-11-16 19:35:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:35:46,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:35:47,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:35:47,092 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 249 treesize of output 251 [2022-11-16 19:35:47,109 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 32 treesize of output 26 [2022-11-16 19:35:47,141 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-16 19:35:47,141 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 269 treesize of output 275 [2022-11-16 19:35:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:35:48,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199451298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:35:48,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [261883840] [2022-11-16 19:35:48,545 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-16 19:35:48,545 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:35:48,545 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:35:48,545 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:35:48,546 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:35:48,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:48,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,651 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:35:48,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:35:48,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,794 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:35:48,794 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:35:48,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,856 INFO L321 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-16 19:35:48,856 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 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-16 19:35:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,892 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:35:48,893 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 257 treesize of output 232 [2022-11-16 19:35:48,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,036 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:35:49,036 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:35:49,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,102 INFO L321 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-16 19:35:49,102 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 5 case distinctions, treesize of input 267 treesize of output 258 [2022-11-16 19:35:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,139 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:35:49,139 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 249 treesize of output 224 [2022-11-16 19:35:49,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,370 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:35:49,370 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 12 case distinctions, treesize of input 278 treesize of output 264 [2022-11-16 19:35:49,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,435 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:35:49,435 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 7 case distinctions, treesize of input 274 treesize of output 261 [2022-11-16 19:35:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,457 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 239 treesize of output 233 [2022-11-16 19:35:49,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,670 INFO L321 Elim1Store]: treesize reduction 288, result has 11.9 percent of original size [2022-11-16 19:35:49,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 272 [2022-11-16 19:35:49,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,770 INFO L321 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-16 19:35:49,771 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 9 case distinctions, treesize of input 278 treesize of output 290 [2022-11-16 19:35:49,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:49,813 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:35:49,813 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:35:50,029 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 27 treesize of output 15 [2022-11-16 19:35:50,042 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 23 treesize of output 1 [2022-11-16 19:35:50,054 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 27 treesize of output 15 [2022-11-16 19:35:50,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:50,284 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-16 19:35:50,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 138 treesize of output 154 [2022-11-16 19:35:50,365 INFO L321 Elim1Store]: treesize reduction 71, result has 33.0 percent of original size [2022-11-16 19:35:50,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 134 treesize of output 159 [2022-11-16 19:35:50,641 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 11 [2022-11-16 19:35:50,651 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 11 [2022-11-16 19:35:50,660 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 23 treesize of output 1 [2022-11-16 19:35:50,694 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:50,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:50,721 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:50,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:50,732 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 23 treesize of output 1 [2022-11-16 19:35:50,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:35:50,803 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:50,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:50,865 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:50,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:51,006 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 11 [2022-11-16 19:35:51,016 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 11 [2022-11-16 19:35:51,026 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 23 treesize of output 1 [2022-11-16 19:35:51,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:51,290 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:35:51,290 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 63 treesize of output 69 [2022-11-16 19:35:51,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:51,325 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:35:51,325 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 63 treesize of output 57 [2022-11-16 19:35:51,341 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 23 treesize of output 1 [2022-11-16 19:35:52,178 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:35:52,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:35:52,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:35:52,208 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 23 treesize of output 1 [2022-11-16 19:35:52,217 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 11 [2022-11-16 19:35:52,226 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 11 [2022-11-16 19:35:52,242 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 23 treesize of output 1 [2022-11-16 19:35:52,265 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:52,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:52,293 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:52,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:52,317 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 [2022-11-16 19:35:52,367 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:52,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:52,429 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:52,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:52,538 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 23 treesize of output 1 [2022-11-16 19:35:52,548 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 11 [2022-11-16 19:35:52,608 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 11 [2022-11-16 19:35:52,821 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 23 treesize of output 1 [2022-11-16 19:35:52,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:52,853 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:35:52,853 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 63 treesize of output 57 [2022-11-16 19:35:52,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:52,890 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:35:52,891 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 63 treesize of output 69 [2022-11-16 19:35:53,142 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:35:53,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:35:53,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:35:53,180 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 23 treesize of output 1 [2022-11-16 19:35:53,191 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 26 [2022-11-16 19:35:53,203 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 26 [2022-11-16 19:35:53,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,242 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 38 treesize of output 40 [2022-11-16 19:35:53,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,258 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 38 treesize of output 40 [2022-11-16 19:35:53,279 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 23 treesize of output 1 [2022-11-16 19:35:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,313 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 53 treesize of output 43 [2022-11-16 19:35:53,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:35:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,345 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 53 treesize of output 43 [2022-11-16 19:35:53,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:35:53,432 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 33 treesize of output 13 [2022-11-16 19:35:53,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:35:53,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:53,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,556 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2022-11-16 19:35:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:53,599 INFO L321 Elim1Store]: treesize reduction 52, result has 18.8 percent of original size [2022-11-16 19:35:53,599 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 3 case distinctions, treesize of input 85 treesize of output 85 [2022-11-16 19:35:53,621 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 33 treesize of output 13 [2022-11-16 19:35:53,953 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:35:53,953 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:35:53,985 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:35:53,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:35:54,015 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 11 [2022-11-16 19:35:54,024 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 11 [2022-11-16 19:35:54,032 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 23 treesize of output 1 [2022-11-16 19:35:54,052 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 23 treesize of output 1 [2022-11-16 19:35:54,075 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:54,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:54,102 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:35:54,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:35:54,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:35:54,176 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:54,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:54,235 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:35:54,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:35:54,357 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:35:54,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:35:54,495 INFO L321 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-16 19:35:54,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-16 19:35:54,597 INFO L321 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-16 19:35:54,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-16 19:36:02,494 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 27 treesize of output 15 [2022-11-16 19:36:02,657 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 23 treesize of output 1 [2022-11-16 19:36:02,670 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 27 treesize of output 15 [2022-11-16 19:36:03,942 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:36:03,943 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:36:03,972 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:36:03,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:36:03,990 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 23 treesize of output 1 [2022-11-16 19:36:03,998 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 11 [2022-11-16 19:36:04,008 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 11 [2022-11-16 19:36:04,042 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:04,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:04,068 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:04,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:04,081 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 23 treesize of output 1 [2022-11-16 19:36:04,141 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:04,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:04,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:36:04,211 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:04,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:04,326 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 23 treesize of output 1 [2022-11-16 19:36:04,336 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 11 [2022-11-16 19:36:04,347 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 11 [2022-11-16 19:36:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:04,625 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:36:04,625 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 63 treesize of output 69 [2022-11-16 19:36:04,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:04,654 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:36:04,654 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 63 treesize of output 57 [2022-11-16 19:36:04,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:36:04,906 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:36:04,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:36:04,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:36:04,943 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 26 [2022-11-16 19:36:04,954 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 23 treesize of output 1 [2022-11-16 19:36:04,965 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 26 [2022-11-16 19:36:05,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,008 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 38 treesize of output 40 [2022-11-16 19:36:05,022 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 23 treesize of output 1 [2022-11-16 19:36:05,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,043 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 38 treesize of output 40 [2022-11-16 19:36:05,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:36:05,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,111 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 53 treesize of output 43 [2022-11-16 19:36:05,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,130 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 53 treesize of output 43 [2022-11-16 19:36:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:36:05,213 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 33 treesize of output 13 [2022-11-16 19:36:05,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 19:36:05,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 19:36:05,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,356 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2022-11-16 19:36:05,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:05,399 INFO L321 Elim1Store]: treesize reduction 52, result has 18.8 percent of original size [2022-11-16 19:36:05,399 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 3 case distinctions, treesize of input 85 treesize of output 85 [2022-11-16 19:36:05,724 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:36:05,724 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:36:05,757 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:36:05,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:36:05,786 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 11 [2022-11-16 19:36:05,796 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 23 treesize of output 1 [2022-11-16 19:36:05,805 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 11 [2022-11-16 19:36:05,821 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 23 treesize of output 1 [2022-11-16 19:36:05,848 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:05,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:05,874 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:05,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:05,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:36:05,943 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:05,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:06,003 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:06,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:06,117 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 23 treesize of output 1 [2022-11-16 19:36:06,128 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 11 [2022-11-16 19:36:06,193 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 11 [2022-11-16 19:36:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:06,416 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:36:06,416 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 63 treesize of output 69 [2022-11-16 19:36:06,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:06,445 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:36:06,445 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 63 treesize of output 57 [2022-11-16 19:36:06,463 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 23 treesize of output 1 [2022-11-16 19:36:07,235 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:36:07,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:36:07,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:36:07,286 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 11 [2022-11-16 19:36:07,294 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 23 treesize of output 1 [2022-11-16 19:36:07,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:36:07,337 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:07,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:07,364 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:07,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:07,377 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 23 treesize of output 1 [2022-11-16 19:36:07,437 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:07,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:07,497 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:07,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:07,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:36:07,622 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 11 [2022-11-16 19:36:07,633 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 23 treesize of output 1 [2022-11-16 19:36:07,643 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 11 [2022-11-16 19:36:07,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:07,921 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:36:07,922 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 63 treesize of output 57 [2022-11-16 19:36:07,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:07,960 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:36:07,961 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 63 treesize of output 69 [2022-11-16 19:36:07,977 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 23 treesize of output 1 [2022-11-16 19:36:08,350 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:36:08,357 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:36:16,197 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45713#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (not (< |ULTIMATE.start_main_~cursor~0#1.base| |#StackHeapBarrier|)) (= (select |#valid| |~#list~0.base|) 1) (= |ULTIMATE.start_main_~next~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|))) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (= (select |#valid| |ULTIMATE.start_main_~cursor~0#1.base|) 1) (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|)) (<= |#NULL.base| 0) (= |ULTIMATE.start_main_~next~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|))) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0)) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:36:16,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:36:16,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:36:16,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 14] total 39 [2022-11-16 19:36:16,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368615452] [2022-11-16 19:36:16,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:36:16,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 19:36:16,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:36:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 19:36:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=3897, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 19:36:16,200 INFO L87 Difference]: Start difference. First operand 1394 states and 2027 transitions. Second operand has 40 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 39 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:36:18,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:36:18,404 INFO L93 Difference]: Finished difference Result 1401 states and 2034 transitions. [2022-11-16 19:36:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 19:36:18,405 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 39 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2022-11-16 19:36:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:36:18,410 INFO L225 Difference]: With dead ends: 1401 [2022-11-16 19:36:18,411 INFO L226 Difference]: Without dead ends: 1401 [2022-11-16 19:36:18,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=391, Invalid=4721, Unknown=0, NotChecked=0, Total=5112 [2022-11-16 19:36:18,412 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 114 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:36:18,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1732 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1172 Invalid, 0 Unknown, 83 Unchecked, 1.1s Time] [2022-11-16 19:36:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2022-11-16 19:36:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1394. [2022-11-16 19:36:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1227 states have (on average 1.5118174409127954) internal successors, (1855), 1293 states have internal predecessors, (1855), 86 states have call successors, (86), 44 states have call predecessors, (86), 44 states have return successors, (86), 56 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 19:36:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2027 transitions. [2022-11-16 19:36:18,438 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2027 transitions. Word has length 34 [2022-11-16 19:36:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:36:18,438 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 2027 transitions. [2022-11-16 19:36:18,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 39 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:36:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2027 transitions. [2022-11-16 19:36:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 19:36:18,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:36:18,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:36:18,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 19:36:18,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-16 19:36:18,646 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:36:18,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:36:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash 810115745, now seen corresponding path program 1 times [2022-11-16 19:36:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:36:18,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741361832] [2022-11-16 19:36:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:36:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:36:20,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:36:20,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741361832] [2022-11-16 19:36:20,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741361832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:36:20,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740942223] [2022-11-16 19:36:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:20,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:36:20,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:36:20,659 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:36:20,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 19:36:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:20,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 19:36:20,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:36:21,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:21,218 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 35 treesize of output 34 [2022-11-16 19:36:21,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:21,222 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 35 treesize of output 34 [2022-11-16 19:36:21,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:21,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:21,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:36:21,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 130 [2022-11-16 19:36:21,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:21,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:21,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:36:21,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 66 [2022-11-16 19:36:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:36:21,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:36:22,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:22,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:22,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:36:22,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 243 treesize of output 239 [2022-11-16 19:36:22,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:22,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:22,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:36:22,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 203 treesize of output 187 [2022-11-16 19:36:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:36:23,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740942223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:36:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [577827035] [2022-11-16 19:36:23,412 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-16 19:36:23,412 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:36:23,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:36:23,413 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:36:23,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:36:23,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:23,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,545 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 19:36:23,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-16 19:36:23,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,662 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:36:23,663 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:36:23,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,696 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:36:23,697 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 257 treesize of output 232 [2022-11-16 19:36:23,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,756 INFO L321 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-16 19:36:23,756 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 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-16 19:36:23,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,910 INFO L321 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-16 19:36:23,911 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 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-16 19:36:23,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:23,946 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-16 19:36:23,947 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 257 treesize of output 232 [2022-11-16 19:36:23,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,027 INFO L321 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-16 19:36:24,028 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 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-16 19:36:24,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,156 INFO L321 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-16 19:36:24,156 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 7 case distinctions, treesize of input 284 treesize of output 261 [2022-11-16 19:36:24,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,256 INFO L321 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-16 19:36:24,256 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 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-16 19:36:24,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 241 [2022-11-16 19:36:24,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,517 INFO L321 Elim1Store]: treesize reduction 288, result has 11.9 percent of original size [2022-11-16 19:36:24,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 case distinctions, treesize of input 282 treesize of output 272 [2022-11-16 19:36:24,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,618 INFO L321 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-16 19:36:24,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 280 treesize of output 290 [2022-11-16 19:36:24,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,662 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-16 19:36:24,662 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-16 19:36:24,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:24,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:24,964 INFO L321 Elim1Store]: treesize reduction 266, result has 8.9 percent of original size [2022-11-16 19:36:24,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 341 treesize of output 313 [2022-11-16 19:36:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:24,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:25,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:36:25,004 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 2 case distinctions, treesize of input 262 treesize of output 240 [2022-11-16 19:36:25,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:25,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:25,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:25,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:25,083 INFO L321 Elim1Store]: treesize reduction 269, result has 7.9 percent of original size [2022-11-16 19:36:25,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 306 treesize of output 269 [2022-11-16 19:36:25,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:25,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:25,344 INFO L321 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-16 19:36:25,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 209 treesize of output 182 [2022-11-16 19:36:25,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:25,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:36:25,573 INFO L321 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-16 19:36:25,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 209 treesize of output 182 [2022-11-16 19:36:25,858 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:36:25,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:36:25,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 19 [2022-11-16 19:36:25,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:36:25,907 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 23 treesize of output 1 [2022-11-16 19:36:25,914 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 11 [2022-11-16 19:36:25,945 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:25,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:25,973 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:25,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:25,985 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 23 treesize of output 1 [2022-11-16 19:36:26,037 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:26,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:26,098 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:26,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:26,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:36:26,231 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 23 treesize of output 1 [2022-11-16 19:36:26,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:36:26,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:36:26,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:26,592 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:36:26,592 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 63 treesize of output 69 [2022-11-16 19:36:26,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:26,628 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:36:26,629 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 63 treesize of output 57 [2022-11-16 19:36:26,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 19:36:27,403 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 19:36:27,404 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 19:36:27,451 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:36:27,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 19:36:27,472 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 11 [2022-11-16 19:36:27,480 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 23 treesize of output 1 [2022-11-16 19:36:27,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 19:36:27,519 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:27,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:27,531 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 23 treesize of output 1 [2022-11-16 19:36:27,553 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 19:36:27,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-16 19:36:27,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:36:27,622 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:27,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:27,679 INFO L321 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-16 19:36:27,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-16 19:36:27,795 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 23 treesize of output 1 [2022-11-16 19:36:27,805 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 11 [2022-11-16 19:36:27,816 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 11 [2022-11-16 19:36:28,060 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 23 treesize of output 1 [2022-11-16 19:36:28,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:28,093 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-16 19:36:28,094 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 63 treesize of output 57 [2022-11-16 19:36:28,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:28,133 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 19:36:28,133 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 63 treesize of output 69 [2022-11-16 19:36:28,546 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-16 19:36:28,553 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:36:36,537 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '48792#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= |ULTIMATE.start_is_empty_~no_beg~0#1| (ite (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0)) 1 0)) (= |ULTIMATE.start_is_empty_~list#1.base| |ULTIMATE.start_is_empty_#in~list#1.base|) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_main_#t~ret23#1|) (= |ULTIMATE.start_remove_one_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (= |ULTIMATE.start_is_empty_~no_end~0#1| (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0)) 1 0)) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_remove_one_~from#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_remove_one_#in~list#1.base| |~#list~0.base|) (<= (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset| 4) (select |#length| |ULTIMATE.start_is_empty_~list#1.base|)) (<= |#NULL.base| 0) (= |~#list~0.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| |ULTIMATE.start_is_empty_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| 0) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret23#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret23#1|)) (<= 0 |~#list~0.offset|) (= |ULTIMATE.start_is_empty_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (<= 3 |~#list~0.base|) (= (select |#valid| |ULTIMATE.start_is_empty_~list#1.base|) 1) (<= 0 |#NULL.offset|) (not (= |ULTIMATE.start_is_empty_~no_end~0#1| |ULTIMATE.start_is_empty_~no_beg~0#1|)) (= |ULTIMATE.start_remove_one_~list#1.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (<= 0 |#StackHeapBarrier|) (not (< |ULTIMATE.start_is_empty_~list#1.base| |#StackHeapBarrier|)) (<= |~#list~0.offset| 0))' at error location [2022-11-16 19:36:36,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:36:36,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:36:36,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 14] total 40 [2022-11-16 19:36:36,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756800635] [2022-11-16 19:36:36,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:36:36,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 19:36:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:36:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 19:36:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=3953, Unknown=0, NotChecked=0, Total=4290 [2022-11-16 19:36:36,539 INFO L87 Difference]: Start difference. First operand 1394 states and 2027 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 19:36:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:36:53,842 INFO L93 Difference]: Finished difference Result 3619 states and 5179 transitions. [2022-11-16 19:36:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-16 19:36:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-11-16 19:36:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:36:53,853 INFO L225 Difference]: With dead ends: 3619 [2022-11-16 19:36:53,853 INFO L226 Difference]: Without dead ends: 3610 [2022-11-16 19:36:53,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 62 SyntacticMatches, 12 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7284 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=2507, Invalid=18373, Unknown=0, NotChecked=0, Total=20880 [2022-11-16 19:36:53,855 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 5155 mSDsluCounter, 5429 mSDsCounter, 0 mSdLazyCounter, 4571 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 5306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 4571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:36:53,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5155 Valid, 5648 Invalid, 5306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [508 Valid, 4571 Invalid, 0 Unknown, 227 Unchecked, 4.4s Time] [2022-11-16 19:36:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2022-11-16 19:36:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 1370. [2022-11-16 19:36:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1203 states have (on average 1.4987531172069826) internal successors, (1803), 1269 states have internal predecessors, (1803), 86 states have call successors, (86), 44 states have call predecessors, (86), 44 states have return successors, (86), 56 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 19:36:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1975 transitions. [2022-11-16 19:36:53,909 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1975 transitions. Word has length 35 [2022-11-16 19:36:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:36:53,909 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1975 transitions. [2022-11-16 19:36:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 19:36:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1975 transitions. [2022-11-16 19:36:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 19:36:53,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:36:53,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:36:53,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 19:36:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:36:54,117 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:36:54,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:36:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash 740254517, now seen corresponding path program 1 times [2022-11-16 19:36:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:36:54,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674360746] [2022-11-16 19:36:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:36:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:36:54,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:36:54,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674360746] [2022-11-16 19:36:54,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674360746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:36:54,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:36:54,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:36:54,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697171191] [2022-11-16 19:36:54,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:36:54,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:36:54,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:36:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:36:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:36:54,316 INFO L87 Difference]: Start difference. First operand 1370 states and 1975 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:36:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:36:54,530 INFO L93 Difference]: Finished difference Result 1640 states and 2334 transitions. [2022-11-16 19:36:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:36:54,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-16 19:36:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:36:54,535 INFO L225 Difference]: With dead ends: 1640 [2022-11-16 19:36:54,535 INFO L226 Difference]: Without dead ends: 1640 [2022-11-16 19:36:54,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:36:54,536 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 297 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:36:54,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 171 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:36:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-11-16 19:36:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1368. [2022-11-16 19:36:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1203 states have (on average 1.4655029093931837) internal successors, (1763), 1267 states have internal predecessors, (1763), 86 states have call successors, (86), 44 states have call predecessors, (86), 44 states have return successors, (86), 56 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 19:36:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1935 transitions. [2022-11-16 19:36:54,562 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1935 transitions. Word has length 36 [2022-11-16 19:36:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:36:54,563 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1935 transitions. [2022-11-16 19:36:54,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:36:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1935 transitions. [2022-11-16 19:36:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 19:36:54,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:36:54,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:36:54,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-16 19:36:54,564 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-16 19:36:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:36:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1509011367, now seen corresponding path program 1 times [2022-11-16 19:36:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:36:54,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955304570] [2022-11-16 19:36:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:54,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:36:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:36:58,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:36:58,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955304570] [2022-11-16 19:36:58,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955304570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:36:58,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896964285] [2022-11-16 19:36:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:36:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:36:58,571 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:36:58,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5475a8-e4ff-4040-b898-48a2f9f46a73/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 19:36:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:58,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 19:36:58,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:36:59,126 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 19:36:59,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 19:36:59,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-16 19:36:59,258 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 15 treesize of output 11 [2022-11-16 19:36:59,264 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 15 treesize of output 11 [2022-11-16 19:36:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,456 INFO L321 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-11-16 19:36:59,456 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 2 case distinctions, treesize of input 76 treesize of output 94 [2022-11-16 19:36:59,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,489 INFO L321 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-11-16 19:36:59,489 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 2 case distinctions, treesize of input 60 treesize of output 78 [2022-11-16 19:36:59,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 84 [2022-11-16 19:36:59,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:36:59,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 84 [2022-11-16 19:37:00,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:00,277 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 25 treesize of output 25 [2022-11-16 19:37:00,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:00,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:00,289 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 36 [2022-11-16 19:37:00,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:00,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:00,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:00,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:00,728 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 19:37:00,729 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 6 case distinctions, treesize of input 115 treesize of output 75 [2022-11-16 19:37:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:00,735 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 41 treesize of output 33 [2022-11-16 19:37:01,245 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 15 treesize of output 11 [2022-11-16 19:37:01,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:01,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:01,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:37:01,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 38 [2022-11-16 19:37:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:01,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:01,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:01,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:01,465 INFO L321 Elim1Store]: treesize reduction 56, result has 37.1 percent of original size [2022-11-16 19:37:01,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 94 treesize of output 67 [2022-11-16 19:37:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:37:01,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:37:06,162 INFO L321 Elim1Store]: treesize reduction 196, result has 36.2 percent of original size [2022-11-16 19:37:06,162 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 4 case distinctions, treesize of input 3929 treesize of output 3999 [2022-11-16 19:37:06,258 INFO L321 Elim1Store]: treesize reduction 70, result has 41.2 percent of original size [2022-11-16 19:37:06,258 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 3 case distinctions, treesize of input 3918 treesize of output 2430 [2022-11-16 19:37:06,464 INFO L321 Elim1Store]: treesize reduction 114, result has 48.4 percent of original size [2022-11-16 19:37:06,464 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 3412 treesize of output 3070 [2022-11-16 19:37:06,504 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 2942 treesize of output 2686 [2022-11-16 19:37:06,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:37:06,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2847 treesize of output 2825 [2022-11-16 19:37:06,718 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 32 treesize of output 26 [2022-11-16 19:37:06,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2022-11-16 19:37:06,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:37:06,831 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 93 treesize of output 89