./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:28:27,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:28:27,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:28:27,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:28:27,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:28:27,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:28:27,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:28:27,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:28:27,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:28:27,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:28:27,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:28:27,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:28:27,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:28:27,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:28:27,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:28:27,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:28:27,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:28:27,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:28:27,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:28:27,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:28:27,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:28:27,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:28:27,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:28:27,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:28:28,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:28:28,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:28:28,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:28:28,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:28:28,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:28:28,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:28:28,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:28:28,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:28:28,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:28:28,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:28:28,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:28:28,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:28:28,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:28:28,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:28:28,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:28:28,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:28:28,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:28:28,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:28:28,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:28:28,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:28:28,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:28:28,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:28:28,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:28:28,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:28:28,055 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:28:28,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:28:28,056 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:28:28,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:28:28,057 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:28:28,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:28:28,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:28:28,058 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:28:28,058 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:28:28,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:28:28,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:28:28,058 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:28:28,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:28:28,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:28:28,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:28:28,060 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:28:28,060 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:28:28,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:28:28,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:28:28,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:28:28,061 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:28:28,061 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:28:28,062 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:28:28,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:28:28,062 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:28:28,062 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:28:28,062 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:28:28,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:28:28,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:28:28,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:28,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:28:28,063 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:28:28,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:28:28,064 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:28:28,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:28:28,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:28:28,065 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_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b [2022-11-26 00:28:28,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:28:28,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:28:28,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:28:28,390 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:28:28,391 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:28:28,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2022-11-26 00:28:31,430 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:28:31,780 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:28:31,781 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2022-11-26 00:28:31,798 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/data/c7ff905c4/699414c8a54247a88d8b61977f48c83f/FLAGc72e369a5 [2022-11-26 00:28:31,813 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/data/c7ff905c4/699414c8a54247a88d8b61977f48c83f [2022-11-26 00:28:31,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:28:31,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:28:31,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:31,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:28:31,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:28:31,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:31" (1/1) ... [2022-11-26 00:28:31,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea97a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:31, skipping insertion in model container [2022-11-26 00:28:31,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:31" (1/1) ... [2022-11-26 00:28:31,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:28:31,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:28:32,257 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2022-11-26 00:28:32,263 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2022-11-26 00:28:32,264 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2022-11-26 00:28:32,265 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2022-11-26 00:28:32,266 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2022-11-26 00:28:32,268 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2022-11-26 00:28:32,269 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2022-11-26 00:28:32,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:32,284 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:28:32,318 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2022-11-26 00:28:32,319 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2022-11-26 00:28:32,320 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2022-11-26 00:28:32,321 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2022-11-26 00:28:32,322 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2022-11-26 00:28:32,323 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2022-11-26 00:28:32,324 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2022-11-26 00:28:32,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:32,351 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:28:32,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32 WrapperNode [2022-11-26 00:28:32,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:32,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:32,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:28:32,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:28:32,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,399 INFO L138 Inliner]: procedures = 119, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2022-11-26 00:28:32,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:32,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:28:32,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:28:32,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:28:32,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,432 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:28:32,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:28:32,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:28:32,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:28:32,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (1/1) ... [2022-11-26 00:28:32,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:32,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:32,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:28:32,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:28:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:28:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:28:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:28:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:28:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:28:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:28:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:28:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:28:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:28:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:28:32,698 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:28:32,701 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:28:33,231 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:28:33,355 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:28:33,356 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-26 00:28:33,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:33 BoogieIcfgContainer [2022-11-26 00:28:33,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:28:33,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:28:33,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:28:33,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:28:33,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:28:31" (1/3) ... [2022-11-26 00:28:33,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4b3de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:33, skipping insertion in model container [2022-11-26 00:28:33,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:32" (2/3) ... [2022-11-26 00:28:33,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4b3de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:33, skipping insertion in model container [2022-11-26 00:28:33,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:33" (3/3) ... [2022-11-26 00:28:33,386 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2022-11-26 00:28:33,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:28:33,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-11-26 00:28:33,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:28:33,462 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;@5c922761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:28:33,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-26 00:28:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 73 states have (on average 2.4794520547945207) internal successors, (181), 153 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 00:28:33,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:33,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 00:28:33,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash 10761, now seen corresponding path program 1 times [2022-11-26 00:28:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:33,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059578763] [2022-11-26 00:28:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:33,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:33,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059578763] [2022-11-26 00:28:33,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059578763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:33,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:33,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005507129] [2022-11-26 00:28:33,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:33,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:33,778 INFO L87 Difference]: Start difference. First operand has 154 states, 73 states have (on average 2.4794520547945207) internal successors, (181), 153 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:34,107 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2022-11-26 00:28:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:34,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-26 00:28:34,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:34,123 INFO L225 Difference]: With dead ends: 179 [2022-11-26 00:28:34,124 INFO L226 Difference]: Without dead ends: 178 [2022-11-26 00:28:34,125 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 [2022-11-26 00:28:34,131 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 137 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:34,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 95 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-26 00:28:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2022-11-26 00:28:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 77 states have (on average 2.103896103896104) internal successors, (162), 153 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2022-11-26 00:28:34,199 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 2 [2022-11-26 00:28:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:34,202 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2022-11-26 00:28:34,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2022-11-26 00:28:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 00:28:34,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:34,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 00:28:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:28:34,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:34,205 INFO L85 PathProgramCache]: Analyzing trace with hash 10762, now seen corresponding path program 1 times [2022-11-26 00:28:34,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:34,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721203013] [2022-11-26 00:28:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:34,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:34,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721203013] [2022-11-26 00:28:34,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721203013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:34,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:34,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287772158] [2022-11-26 00:28:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:34,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:34,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:34,294 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:34,422 INFO L93 Difference]: Finished difference Result 150 states and 157 transitions. [2022-11-26 00:28:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:34,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-26 00:28:34,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:34,424 INFO L225 Difference]: With dead ends: 150 [2022-11-26 00:28:34,425 INFO L226 Difference]: Without dead ends: 150 [2022-11-26 00:28:34,425 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 [2022-11-26 00:28:34,426 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:34,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 75 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-26 00:28:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-26 00:28:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 77 states have (on average 2.038961038961039) internal successors, (157), 149 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 157 transitions. [2022-11-26 00:28:34,435 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 157 transitions. Word has length 2 [2022-11-26 00:28:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:34,435 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 157 transitions. [2022-11-26 00:28:34,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 157 transitions. [2022-11-26 00:28:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:28:34,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:34,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:28:34,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:28:34,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 320566798, now seen corresponding path program 1 times [2022-11-26 00:28:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411395418] [2022-11-26 00:28:34,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:34,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:34,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:34,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411395418] [2022-11-26 00:28:34,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411395418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:34,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:34,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:28:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181822148] [2022-11-26 00:28:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:34,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:34,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:34,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:34,542 INFO L87 Difference]: Start difference. First operand 150 states and 157 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2022-11-26 00:28:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:34,717 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2022-11-26 00:28:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:34,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2022-11-26 00:28:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:34,721 INFO L225 Difference]: With dead ends: 146 [2022-11-26 00:28:34,721 INFO L226 Difference]: Without dead ends: 146 [2022-11-26 00:28:34,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:34,726 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 123 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:34,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 85 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-26 00:28:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2022-11-26 00:28:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 78 states have (on average 1.9487179487179487) internal successors, (152), 143 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2022-11-26 00:28:34,741 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 5 [2022-11-26 00:28:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:34,741 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2022-11-26 00:28:34,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2022-11-26 00:28:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2022-11-26 00:28:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:28:34,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:34,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:28:34,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:28:34,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:34,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash 320566799, now seen corresponding path program 1 times [2022-11-26 00:28:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:34,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677423935] [2022-11-26 00:28:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:34,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677423935] [2022-11-26 00:28:34,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677423935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:34,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:34,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:28:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931177884] [2022-11-26 00:28:34,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:34,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:34,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:34,945 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2022-11-26 00:28:35,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:35,094 INFO L93 Difference]: Finished difference Result 158 states and 164 transitions. [2022-11-26 00:28:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:35,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2022-11-26 00:28:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:35,095 INFO L225 Difference]: With dead ends: 158 [2022-11-26 00:28:35,096 INFO L226 Difference]: Without dead ends: 158 [2022-11-26 00:28:35,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:35,097 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 120 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:35,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 93 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-26 00:28:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2022-11-26 00:28:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 83 states have (on average 1.855421686746988) internal successors, (154), 145 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2022-11-26 00:28:35,105 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 5 [2022-11-26 00:28:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:35,106 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2022-11-26 00:28:35,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2022-11-26 00:28:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2022-11-26 00:28:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:28:35,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:35,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:35,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:28:35,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash 423636449, now seen corresponding path program 1 times [2022-11-26 00:28:35,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:35,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903127801] [2022-11-26 00:28:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:35,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:35,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:35,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903127801] [2022-11-26 00:28:35,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903127801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:35,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:35,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:35,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087219434] [2022-11-26 00:28:35,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:35,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:28:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:28:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:28:35,407 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:35,595 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2022-11-26 00:28:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:35,596 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), 0 states have call successors, (0), 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 10 [2022-11-26 00:28:35,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:35,597 INFO L225 Difference]: With dead ends: 144 [2022-11-26 00:28:35,597 INFO L226 Difference]: Without dead ends: 144 [2022-11-26 00:28:35,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:35,599 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 191 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:35,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 72 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:35,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-26 00:28:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2022-11-26 00:28:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 85 states have (on average 1.6823529411764706) internal successors, (143), 132 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2022-11-26 00:28:35,617 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 10 [2022-11-26 00:28:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:35,617 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2022-11-26 00:28:35,618 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2022-11-26 00:28:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:28:35,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:35,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:35,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:28:35,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash 423636450, now seen corresponding path program 1 times [2022-11-26 00:28:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:35,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035369882] [2022-11-26 00:28:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:35,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:35,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:35,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035369882] [2022-11-26 00:28:35,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035369882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:35,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:35,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568949837] [2022-11-26 00:28:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:35,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:35,919 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:36,256 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2022-11-26 00:28:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:36,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:28:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:36,258 INFO L225 Difference]: With dead ends: 167 [2022-11-26 00:28:36,258 INFO L226 Difference]: Without dead ends: 167 [2022-11-26 00:28:36,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:36,265 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 285 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:36,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 128 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-26 00:28:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 141. [2022-11-26 00:28:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 94 states have (on average 1.6382978723404256) internal successors, (154), 140 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2022-11-26 00:28:36,270 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 10 [2022-11-26 00:28:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:36,270 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2022-11-26 00:28:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2022-11-26 00:28:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:28:36,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:36,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:28:36,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash -906992480, now seen corresponding path program 1 times [2022-11-26 00:28:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:36,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242355139] [2022-11-26 00:28:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:36,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:36,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242355139] [2022-11-26 00:28:36,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242355139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:36,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:36,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:28:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461172825] [2022-11-26 00:28:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:36,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:36,454 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:36,632 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2022-11-26 00:28:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:36,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-26 00:28:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:36,634 INFO L225 Difference]: With dead ends: 140 [2022-11-26 00:28:36,634 INFO L226 Difference]: Without dead ends: 140 [2022-11-26 00:28:36,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:36,635 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 6 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:36,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 295 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-26 00:28:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-26 00:28:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 94 states have (on average 1.6170212765957446) internal successors, (152), 139 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2022-11-26 00:28:36,640 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 12 [2022-11-26 00:28:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:36,640 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2022-11-26 00:28:36,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2022-11-26 00:28:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:28:36,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:36,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:36,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:28:36,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:36,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash -906992479, now seen corresponding path program 1 times [2022-11-26 00:28:36,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:36,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731405448] [2022-11-26 00:28:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:36,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:36,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:36,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731405448] [2022-11-26 00:28:36,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731405448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:36,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:36,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:28:36,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477678401] [2022-11-26 00:28:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:36,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:36,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:36,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:36,929 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:37,132 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2022-11-26 00:28:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:37,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-26 00:28:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:37,134 INFO L225 Difference]: With dead ends: 139 [2022-11-26 00:28:37,134 INFO L226 Difference]: Without dead ends: 139 [2022-11-26 00:28:37,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:37,135 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 3 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:37,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 284 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-26 00:28:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-26 00:28:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 94 states have (on average 1.5957446808510638) internal successors, (150), 138 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2022-11-26 00:28:37,139 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 12 [2022-11-26 00:28:37,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:37,139 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2022-11-26 00:28:37,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2022-11-26 00:28:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:28:37,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:37,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:28:37,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:37,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash -907212716, now seen corresponding path program 1 times [2022-11-26 00:28:37,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:37,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749712925] [2022-11-26 00:28:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:37,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:37,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:37,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749712925] [2022-11-26 00:28:37,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749712925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:37,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:37,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385756846] [2022-11-26 00:28:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:37,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:37,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:37,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:37,223 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:37,434 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2022-11-26 00:28:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:37,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-26 00:28:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:37,436 INFO L225 Difference]: With dead ends: 172 [2022-11-26 00:28:37,436 INFO L226 Difference]: Without dead ends: 172 [2022-11-26 00:28:37,437 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 [2022-11-26 00:28:37,438 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 255 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:37,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 127 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-26 00:28:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2022-11-26 00:28:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 96 states have (on average 1.5729166666666667) internal successors, (151), 139 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2022-11-26 00:28:37,443 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 12 [2022-11-26 00:28:37,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:37,444 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2022-11-26 00:28:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2022-11-26 00:28:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:28:37,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:37,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:37,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:28:37,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:37,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash 258858983, now seen corresponding path program 1 times [2022-11-26 00:28:37,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:37,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179524974] [2022-11-26 00:28:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:37,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:37,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179524974] [2022-11-26 00:28:37,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179524974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:37,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:37,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:37,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613745764] [2022-11-26 00:28:37,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:37,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:37,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:37,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:37,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:37,752 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:38,081 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2022-11-26 00:28:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:38,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-26 00:28:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:38,083 INFO L225 Difference]: With dead ends: 139 [2022-11-26 00:28:38,083 INFO L226 Difference]: Without dead ends: 139 [2022-11-26 00:28:38,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:28:38,084 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 160 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:38,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 187 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-26 00:28:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-26 00:28:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.5625) internal successors, (150), 138 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2022-11-26 00:28:38,088 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 14 [2022-11-26 00:28:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:38,088 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2022-11-26 00:28:38,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2022-11-26 00:28:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:28:38,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:38,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:38,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:28:38,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:38,090 INFO L85 PathProgramCache]: Analyzing trace with hash 258858984, now seen corresponding path program 1 times [2022-11-26 00:28:38,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:38,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997582008] [2022-11-26 00:28:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:38,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997582008] [2022-11-26 00:28:38,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997582008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:38,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:38,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:38,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480895849] [2022-11-26 00:28:38,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:38,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:38,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:38,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:38,497 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:38,972 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2022-11-26 00:28:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:38,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-26 00:28:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:38,974 INFO L225 Difference]: With dead ends: 154 [2022-11-26 00:28:38,974 INFO L226 Difference]: Without dead ends: 154 [2022-11-26 00:28:38,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:38,975 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 205 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:38,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 196 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-26 00:28:38,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2022-11-26 00:28:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 104 states have (on average 1.4903846153846154) internal successors, (155), 140 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2022-11-26 00:28:38,979 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 14 [2022-11-26 00:28:38,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:38,980 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2022-11-26 00:28:38,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2022-11-26 00:28:38,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:28:38,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:38,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:38,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:28:38,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1459239985, now seen corresponding path program 1 times [2022-11-26 00:28:38,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:38,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498930892] [2022-11-26 00:28:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:38,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:39,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:39,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498930892] [2022-11-26 00:28:39,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498930892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:39,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:39,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101104012] [2022-11-26 00:28:39,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:39,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:39,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:39,192 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:39,574 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2022-11-26 00:28:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:28:39,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-26 00:28:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:39,577 INFO L225 Difference]: With dead ends: 193 [2022-11-26 00:28:39,577 INFO L226 Difference]: Without dead ends: 193 [2022-11-26 00:28:39,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:28:39,578 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 324 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:39,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 226 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:39,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-26 00:28:39,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 148. [2022-11-26 00:28:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 111 states have (on average 1.4684684684684686) internal successors, (163), 147 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 163 transitions. [2022-11-26 00:28:39,583 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 163 transitions. Word has length 15 [2022-11-26 00:28:39,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:39,583 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 163 transitions. [2022-11-26 00:28:39,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,583 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 163 transitions. [2022-11-26 00:28:39,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:28:39,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:39,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:39,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:28:39,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:39,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1897501794, now seen corresponding path program 1 times [2022-11-26 00:28:39,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:39,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513045531] [2022-11-26 00:28:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:39,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:39,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513045531] [2022-11-26 00:28:39,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513045531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:39,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:39,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:28:39,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111354852] [2022-11-26 00:28:39,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:39,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:28:39,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:28:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:28:39,708 INFO L87 Difference]: Start difference. First operand 148 states and 163 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:39,825 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2022-11-26 00:28:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:28:39,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:28:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:39,827 INFO L225 Difference]: With dead ends: 146 [2022-11-26 00:28:39,827 INFO L226 Difference]: Without dead ends: 146 [2022-11-26 00:28:39,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:39,828 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 20 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:39,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 197 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-26 00:28:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-11-26 00:28:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.4545454545454546) internal successors, (160), 145 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2022-11-26 00:28:39,832 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 19 [2022-11-26 00:28:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:39,832 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2022-11-26 00:28:39,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2022-11-26 00:28:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:28:39,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:39,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:39,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:28:39,834 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1910415876, now seen corresponding path program 1 times [2022-11-26 00:28:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:39,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688497178] [2022-11-26 00:28:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:39,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:39,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688497178] [2022-11-26 00:28:39,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688497178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:39,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:39,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:28:39,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330445184] [2022-11-26 00:28:39,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:39,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:39,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:39,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:39,988 INFO L87 Difference]: Start difference. First operand 146 states and 160 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:40,143 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2022-11-26 00:28:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:40,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:28:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:40,144 INFO L225 Difference]: With dead ends: 145 [2022-11-26 00:28:40,144 INFO L226 Difference]: Without dead ends: 145 [2022-11-26 00:28:40,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:40,145 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:40,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 263 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-26 00:28:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-26 00:28:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 144 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2022-11-26 00:28:40,149 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 19 [2022-11-26 00:28:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:40,150 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2022-11-26 00:28:40,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2022-11-26 00:28:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:28:40,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:40,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:40,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:28:40,151 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1910415877, now seen corresponding path program 1 times [2022-11-26 00:28:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:40,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148427864] [2022-11-26 00:28:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:40,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:40,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:40,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148427864] [2022-11-26 00:28:40,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148427864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:40,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:40,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:28:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494941035] [2022-11-26 00:28:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:40,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:40,446 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:40,617 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2022-11-26 00:28:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:28:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:28:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:40,619 INFO L225 Difference]: With dead ends: 144 [2022-11-26 00:28:40,619 INFO L226 Difference]: Without dead ends: 144 [2022-11-26 00:28:40,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:40,620 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:40,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 257 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-26 00:28:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-11-26 00:28:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 110 states have (on average 1.4363636363636363) internal successors, (158), 143 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 158 transitions. [2022-11-26 00:28:40,626 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 158 transitions. Word has length 19 [2022-11-26 00:28:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:40,627 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 158 transitions. [2022-11-26 00:28:40,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 158 transitions. [2022-11-26 00:28:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:28:40,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:40,628 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] [2022-11-26 00:28:40,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:28:40,629 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1958872500, now seen corresponding path program 1 times [2022-11-26 00:28:40,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:40,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732034202] [2022-11-26 00:28:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:40,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:40,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:40,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732034202] [2022-11-26 00:28:40,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732034202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:40,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:40,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:28:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749518870] [2022-11-26 00:28:40,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:40,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:40,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:40,939 INFO L87 Difference]: Start difference. First operand 144 states and 158 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:41,199 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2022-11-26 00:28:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:41,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-26 00:28:41,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:41,200 INFO L225 Difference]: With dead ends: 143 [2022-11-26 00:28:41,200 INFO L226 Difference]: Without dead ends: 143 [2022-11-26 00:28:41,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:41,201 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 50 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:41,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 257 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-26 00:28:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-11-26 00:28:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 110 states have (on average 1.4272727272727272) internal successors, (157), 142 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2022-11-26 00:28:41,205 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 21 [2022-11-26 00:28:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:41,205 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2022-11-26 00:28:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2022-11-26 00:28:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:28:41,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:41,206 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] [2022-11-26 00:28:41,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:28:41,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1958872501, now seen corresponding path program 1 times [2022-11-26 00:28:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:41,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311155468] [2022-11-26 00:28:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:41,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:41,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311155468] [2022-11-26 00:28:41,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311155468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:41,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:41,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:41,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769626491] [2022-11-26 00:28:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:41,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:41,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:41,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:41,630 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:41,964 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2022-11-26 00:28:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:41,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-26 00:28:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:41,965 INFO L225 Difference]: With dead ends: 141 [2022-11-26 00:28:41,965 INFO L226 Difference]: Without dead ends: 141 [2022-11-26 00:28:41,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:28:41,966 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 61 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:41,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 306 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:41,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-26 00:28:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 122. [2022-11-26 00:28:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.3854166666666667) internal successors, (133), 121 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2022-11-26 00:28:41,969 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 21 [2022-11-26 00:28:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:41,970 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2022-11-26 00:28:41,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2022-11-26 00:28:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:28:41,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:41,971 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:41,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:28:41,971 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash 770959303, now seen corresponding path program 1 times [2022-11-26 00:28:41,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:41,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779372490] [2022-11-26 00:28:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:41,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:42,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:42,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779372490] [2022-11-26 00:28:42,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779372490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:28:42,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273490998] [2022-11-26 00:28:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:42,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:42,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:42,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:42,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:28:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-26 00:28:42,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:42,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:42,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:42,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:42,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:42,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:42,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:42,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:42,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:42,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:42,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:28:42,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:28:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:42,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:42,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273490998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861827812] [2022-11-26 00:28:42,963 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-26 00:28:42,964 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:28:42,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:28:42,974 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:28:42,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:28:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:28:43,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,050 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 30 treesize of output 21 [2022-11-26 00:28:43,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:43,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,080 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 34 treesize of output 21 [2022-11-26 00:28:43,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:43,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:43,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,130 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 28 treesize of output 30 [2022-11-26 00:28:43,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-26 00:28:43,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-26 00:28:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-26 00:28:43,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-26 00:28:43,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-26 00:28:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-26 00:28:43,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:43,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-26 00:28:43,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:43,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-26 00:28:43,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:43,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:43,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-26 00:28:43,777 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:28:46,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1861827812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:46,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:28:46,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 6, 5] total 21 [2022-11-26 00:28:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423910783] [2022-11-26 00:28:46,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:46,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:28:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:28:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:28:46,617 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:47,492 INFO L93 Difference]: Finished difference Result 140 states and 147 transitions. [2022-11-26 00:28:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:28:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-26 00:28:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:47,494 INFO L225 Difference]: With dead ends: 140 [2022-11-26 00:28:47,494 INFO L226 Difference]: Without dead ends: 140 [2022-11-26 00:28:47,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-11-26 00:28:47,495 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 134 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:47,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 117 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:28:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-26 00:28:47,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 103. [2022-11-26 00:28:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 102 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2022-11-26 00:28:47,498 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 21 [2022-11-26 00:28:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:47,499 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2022-11-26 00:28:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2022-11-26 00:28:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-26 00:28:47,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:47,500 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] [2022-11-26 00:28:47,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 00:28:47,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-26 00:28:47,707 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1879594872, now seen corresponding path program 1 times [2022-11-26 00:28:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:47,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348718174] [2022-11-26 00:28:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:47,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:47,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:47,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348718174] [2022-11-26 00:28:47,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348718174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:47,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:47,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:28:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194630409] [2022-11-26 00:28:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:47,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:28:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:28:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:28:47,903 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:48,017 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2022-11-26 00:28:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:28:48,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-26 00:28:48,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:48,018 INFO L225 Difference]: With dead ends: 102 [2022-11-26 00:28:48,019 INFO L226 Difference]: Without dead ends: 102 [2022-11-26 00:28:48,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:48,019 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:48,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 139 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-26 00:28:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2022-11-26 00:28:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 100 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2022-11-26 00:28:48,022 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 22 [2022-11-26 00:28:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:48,023 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2022-11-26 00:28:48,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2022-11-26 00:28:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-26 00:28:48,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:48,024 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] [2022-11-26 00:28:48,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:28:48,024 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1890689676, now seen corresponding path program 1 times [2022-11-26 00:28:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:48,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009630125] [2022-11-26 00:28:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:48,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:48,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009630125] [2022-11-26 00:28:48,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009630125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:48,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:48,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:48,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438459731] [2022-11-26 00:28:48,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:48,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:48,351 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:48,719 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2022-11-26 00:28:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:28:48,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-26 00:28:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:48,720 INFO L225 Difference]: With dead ends: 121 [2022-11-26 00:28:48,720 INFO L226 Difference]: Without dead ends: 121 [2022-11-26 00:28:48,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:28:48,722 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 123 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:48,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 157 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-26 00:28:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 108. [2022-11-26 00:28:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 91 states have (on average 1.2637362637362637) internal successors, (115), 107 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2022-11-26 00:28:48,731 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 24 [2022-11-26 00:28:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:48,732 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2022-11-26 00:28:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2022-11-26 00:28:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-26 00:28:48,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:48,733 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, 1, 1, 1] [2022-11-26 00:28:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:28:48,733 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1681363225, now seen corresponding path program 1 times [2022-11-26 00:28:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:48,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909005030] [2022-11-26 00:28:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:48,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:48,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909005030] [2022-11-26 00:28:48,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909005030] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:28:48,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514319790] [2022-11-26 00:28:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:48,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:48,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:48,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:48,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:28:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:28:49,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:49,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:28:49,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 00:28:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:28:49,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:28:49,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514319790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:49,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:28:49,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-11-26 00:28:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90295467] [2022-11-26 00:28:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:49,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:28:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:28:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:49,091 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:49,201 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2022-11-26 00:28:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:28:49,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-26 00:28:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:49,203 INFO L225 Difference]: With dead ends: 122 [2022-11-26 00:28:49,203 INFO L226 Difference]: Without dead ends: 122 [2022-11-26 00:28:49,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:49,203 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:49,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-26 00:28:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2022-11-26 00:28:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.25) internal successors, (125), 116 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 125 transitions. [2022-11-26 00:28:49,207 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 125 transitions. Word has length 28 [2022-11-26 00:28:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:49,207 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 125 transitions. [2022-11-26 00:28:49,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 125 transitions. [2022-11-26 00:28:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-26 00:28:49,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:49,209 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-26 00:28:49,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:49,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-26 00:28:49,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash -973930404, now seen corresponding path program 1 times [2022-11-26 00:28:49,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588628964] [2022-11-26 00:28:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:49,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:49,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588628964] [2022-11-26 00:28:49,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588628964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:28:49,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021976490] [2022-11-26 00:28:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:49,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:49,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:49,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:49,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:28:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:49,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 00:28:49,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:49,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:49,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:49,898 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 21 treesize of output 20 [2022-11-26 00:28:49,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:49,917 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 21 treesize of output 20 [2022-11-26 00:28:49,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:50,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:28:50,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:28:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:28:50,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:28:50,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021976490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:50,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877090968] [2022-11-26 00:28:50,219 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-26 00:28:50,220 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:28:50,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:28:50,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:28:50,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:28:50,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:28:50,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:50,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:50,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-26 00:28:50,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,300 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 34 treesize of output 21 [2022-11-26 00:28:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:50,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:50,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-26 00:28:50,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-26 00:28:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-26 00:28:50,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,399 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 28 treesize of output 30 [2022-11-26 00:28:50,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-26 00:28:50,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-26 00:28:50,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-26 00:28:50,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:50,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:50,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-26 00:28:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-26 00:28:50,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:50,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:50,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-26 00:28:50,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:28:50,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:28:50,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:28:51,005 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:28:54,273 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6695#(and (= |ULTIMATE.start_main_~null~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~list~0#1.base|) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:28:54,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:28:54,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:28:54,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-11-26 00:28:54,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854428633] [2022-11-26 00:28:54,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:54,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:54,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:54,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2022-11-26 00:28:54,276 INFO L87 Difference]: Start difference. First operand 117 states and 125 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:54,865 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2022-11-26 00:28:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:28:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-26 00:28:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:54,869 INFO L225 Difference]: With dead ends: 179 [2022-11-26 00:28:54,869 INFO L226 Difference]: Without dead ends: 179 [2022-11-26 00:28:54,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2022-11-26 00:28:54,871 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 232 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:54,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 182 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-26 00:28:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 135. [2022-11-26 00:28:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 118 states have (on average 1.2372881355932204) internal successors, (146), 134 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2022-11-26 00:28:54,875 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 29 [2022-11-26 00:28:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:54,876 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2022-11-26 00:28:54,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2022-11-26 00:28:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-26 00:28:54,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:54,877 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, 1, 1, 1, 1, 1] [2022-11-26 00:28:54,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:55,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:55,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash -182482604, now seen corresponding path program 1 times [2022-11-26 00:28:55,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:55,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699850927] [2022-11-26 00:28:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:55,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:55,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:55,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699850927] [2022-11-26 00:28:55,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699850927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:55,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:55,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:28:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656117802] [2022-11-26 00:28:55,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:55,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:28:55,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:55,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:28:55,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:55,597 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:55,907 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2022-11-26 00:28:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:28:55,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-26 00:28:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:55,908 INFO L225 Difference]: With dead ends: 168 [2022-11-26 00:28:55,908 INFO L226 Difference]: Without dead ends: 168 [2022-11-26 00:28:55,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:28:55,909 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 145 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:55,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 166 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-26 00:28:55,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 126. [2022-11-26 00:28:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2022-11-26 00:28:55,913 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 30 [2022-11-26 00:28:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:55,913 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2022-11-26 00:28:55,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2022-11-26 00:28:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:55,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:55,916 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-26 00:28:55,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-26 00:28:55,916 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-26 00:28:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1675562428, now seen corresponding path program 1 times [2022-11-26 00:28:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:55,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748045161] [2022-11-26 00:28:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:56,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:56,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748045161] [2022-11-26 00:28:56,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748045161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:28:56,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759911454] [2022-11-26 00:28:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:56,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:56,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:56,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:56,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313539c6-3c32-4d5e-a330-a2acf4e93a5d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:28:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:56,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-26 00:28:56,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:56,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:28:56,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:28:57,050 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 00:28:57,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 00:28:57,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:57,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:57,192 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:28:57,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-26 00:28:57,197 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 20 treesize of output 22 [2022-11-26 00:28:57,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-26 00:28:57,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:28:57,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:28:57,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:28:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:57,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:57,410 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-26 00:28:57,475 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array Int Int)) (v_ArrVal_1425 (Array Int Int)) (v_ArrVal_1424 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1424) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1425) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1427) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-26 00:28:57,487 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array Int Int)) (v_ArrVal_1425 (Array Int Int)) (v_ArrVal_1424 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (store (store |c_#memory_int| .cse0 v_ArrVal_1424) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1425) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1427)) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-26 00:28:57,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:28:57,502 INFO L350 Elim1Store]: Elim1 eliminated variable 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 1 case distinctions, treesize of input 38 treesize of output 39 [2022-11-26 00:28:57,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2022-11-26 00:28:57,512 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 29 treesize of output 27 [2022-11-26 00:28:57,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:57,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:28:57,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 45 [2022-11-26 00:28:57,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2022-11-26 00:28:57,785 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 7 treesize of output 3 [2022-11-26 00:28:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:57,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759911454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:57,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2113502085] [2022-11-26 00:28:57,821 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-26 00:28:57,822 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:28:57,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:28:57,823 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:28:57,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:28:57,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:28:57,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:57,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:28:57,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,887 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 30 treesize of output 21 [2022-11-26 00:28:57,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,904 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 34 treesize of output 21 [2022-11-26 00:28:57,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:57,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:28:57,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,964 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 28 treesize of output 30 [2022-11-26 00:28:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-26 00:28:57,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:57,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-26 00:28:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-26 00:28:58,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-26 00:28:58,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-26 00:28:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-26 00:28:58,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:58,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-26 00:28:58,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:58,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-26 00:28:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-26 00:28:58,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-26 00:28:58,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-26 00:28:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-26 00:28:58,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2022-11-26 00:28:58,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2022-11-26 00:28:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,436 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-26 00:28:58,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 194 treesize of output 153 [2022-11-26 00:28:58,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 116 [2022-11-26 00:28:58,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 45 [2022-11-26 00:28:58,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,579 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-26 00:28:58,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 135 [2022-11-26 00:28:58,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,614 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-26 00:28:58,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 98 [2022-11-26 00:28:58,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-26 00:28:58,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,732 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-26 00:28:58,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-26 00:28:58,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:58,769 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-26 00:28:58,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 145 treesize of output 115 [2022-11-26 00:28:58,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 69 [2022-11-26 00:28:58,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:58,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 60 [2022-11-26 00:28:59,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:59,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:28:59,035 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-26 00:28:59,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 185 treesize of output 155 [2022-11-26 00:28:59,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 69 [2022-11-26 00:28:59,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:28:59,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 57 [2022-11-26 00:28:59,178 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-26 00:28:59,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-11-26 00:28:59,210 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-26 00:28:59,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-11-26 00:28:59,223 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 27 treesize of output 1 [2022-11-26 00:28:59,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:29:00,459 INFO L321 Elim1Store]: treesize reduction 172, result has 75.3 percent of original size [2022-11-26 00:29:00,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 387 treesize of output 803 [2022-11-26 00:29:01,626 INFO L321 Elim1Store]: treesize reduction 140, result has 75.4 percent of original size [2022-11-26 00:29:01,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 541 treesize of output 851 [2022-11-26 00:31:11,114 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 820 DAG size of output: 820 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)