./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 --- 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-4e7fbc6 [2022-11-23 15:44:05,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:44:05,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:44:05,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:44:05,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:44:05,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:44:05,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:44:05,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:44:05,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:44:05,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:44:05,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:44:05,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:44:05,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:44:05,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:44:05,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:44:05,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:44:05,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:44:05,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:44:05,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:44:05,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:44:05,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:44:05,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:44:05,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:44:05,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:44:05,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:44:05,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:44:05,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:44:05,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:44:05,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:44:05,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:44:05,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:44:05,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:44:05,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:44:05,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:44:05,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:44:05,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:44:05,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:44:05,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:44:05,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:44:05,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:44:05,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:44:05,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2022-11-23 15:44:05,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:44:05,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:44:05,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:44:05,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:44:05,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:44:05,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:44:05,225 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:44:05,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:44:05,226 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:44:05,226 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:44:05,227 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:44:05,227 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:44:05,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:44:05,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:44:05,228 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:44:05,229 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:44:05,229 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:44:05,229 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:44:05,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:44:05,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:44:05,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:44:05,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:44:05,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:44:05,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:44:05,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:44:05,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:44:05,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:44:05,232 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:44:05,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:44:05,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:44:05,233 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:44:05,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:44:05,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:44:05,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:44:05,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:44:05,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:44:05,235 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:44:05,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:44:05,235 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:44:05,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:44:05,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:44:05,236 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_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 [2022-11-23 15:44:05,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:44:05,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:44:05,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:44:05,608 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:44:05,609 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:44:05,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2022-11-23 15:44:08,778 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:44:09,106 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:44:09,107 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2022-11-23 15:44:09,119 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/data/f6387f7f4/af91da6261ef4b07b6b3fa7cc4f4becb/FLAG3f7c8539c [2022-11-23 15:44:09,141 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/data/f6387f7f4/af91da6261ef4b07b6b3fa7cc4f4becb [2022-11-23 15:44:09,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:44:09,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:44:09,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:44:09,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:44:09,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:44:09,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5672634a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09, skipping insertion in model container [2022-11-23 15:44:09,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:44:09,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:44:09,524 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2022-11-23 15:44:09,536 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2022-11-23 15:44:09,544 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2022-11-23 15:44:09,545 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2022-11-23 15:44:09,548 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2022-11-23 15:44:09,549 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2022-11-23 15:44:09,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:44:09,575 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:44:09,630 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2022-11-23 15:44:09,635 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2022-11-23 15:44:09,640 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2022-11-23 15:44:09,648 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2022-11-23 15:44:09,649 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2022-11-23 15:44:09,651 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_f8600532-7df2-460a-b996-3ae545b5cf3d/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2022-11-23 15:44:09,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:44:09,690 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:44:09,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09 WrapperNode [2022-11-23 15:44:09,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:44:09,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:44:09,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:44:09,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:44:09,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,747 INFO L138 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 189 [2022-11-23 15:44:09,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:44:09,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:44:09,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:44:09,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:44:09,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:44:09,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:44:09,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:44:09,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:44:09,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (1/1) ... [2022-11-23 15:44:09,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:44:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:09,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:44:09,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:44:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:44:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:44:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:44:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:44:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:44:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:44:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:44:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:44:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:44:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:44:10,012 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:44:10,014 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:44:10,536 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:44:10,621 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:44:10,630 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-23 15:44:10,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:10 BoogieIcfgContainer [2022-11-23 15:44:10,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:44:10,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:44:10,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:44:10,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:44:10,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:44:09" (1/3) ... [2022-11-23 15:44:10,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12212c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:44:10, skipping insertion in model container [2022-11-23 15:44:10,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:09" (2/3) ... [2022-11-23 15:44:10,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12212c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:44:10, skipping insertion in model container [2022-11-23 15:44:10,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:10" (3/3) ... [2022-11-23 15:44:10,648 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2022-11-23 15:44:10,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:44:10,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2022-11-23 15:44:10,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:44:10,793 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;@385e4450, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:44:10,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2022-11-23 15:44:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 136 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 15:44:10,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:10,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 15:44:10,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash 11598, now seen corresponding path program 1 times [2022-11-23 15:44:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:10,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670446269] [2022-11-23 15:44:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:10,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:11,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:11,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670446269] [2022-11-23 15:44:11,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670446269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:11,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:11,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:44:11,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106885057] [2022-11-23 15:44:11,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:44:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:11,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:44:11,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:44:11,044 INFO L87 Difference]: Start difference. First operand has 137 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 136 states have internal predecessors, (168), 0 states have call successors, (0), 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) [2022-11-23 15:44:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:11,244 INFO L93 Difference]: Finished difference Result 139 states and 148 transitions. [2022-11-23 15:44:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:44:11,246 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 [2022-11-23 15:44:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:11,264 INFO L225 Difference]: With dead ends: 139 [2022-11-23 15:44:11,264 INFO L226 Difference]: Without dead ends: 137 [2022-11-23 15:44:11,267 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 [2022-11-23 15:44:11,272 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 131 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:11,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 81 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:44:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-23 15:44:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2022-11-23 15:44:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 133 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) [2022-11-23 15:44:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2022-11-23 15:44:11,345 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 2 [2022-11-23 15:44:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:11,345 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2022-11-23 15:44:11,345 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) [2022-11-23 15:44:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2022-11-23 15:44:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 15:44:11,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:11,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 15:44:11,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:44:11,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash 11599, now seen corresponding path program 1 times [2022-11-23 15:44:11,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:11,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940640909] [2022-11-23 15:44:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:11,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:11,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:11,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940640909] [2022-11-23 15:44:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940640909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:11,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:11,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:44:11,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945123189] [2022-11-23 15:44:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:11,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:44:11,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:44:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:44:11,516 INFO L87 Difference]: Start difference. First operand 134 states and 143 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) [2022-11-23 15:44:11,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:11,677 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2022-11-23 15:44:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:44:11,678 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 [2022-11-23 15:44:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:11,682 INFO L225 Difference]: With dead ends: 135 [2022-11-23 15:44:11,683 INFO L226 Difference]: Without dead ends: 135 [2022-11-23 15:44:11,683 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 [2022-11-23 15:44:11,684 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 128 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:11,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 81 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:44:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-23 15:44:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2022-11-23 15:44:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 68 states have (on average 2.073529411764706) internal successors, (141), 131 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions. [2022-11-23 15:44:11,692 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 2 [2022-11-23 15:44:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:11,693 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions. [2022-11-23 15:44:11,693 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) [2022-11-23 15:44:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2022-11-23 15:44:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:44:11,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:11,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:44:11,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:44:11,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:11,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2130162285, now seen corresponding path program 1 times [2022-11-23 15:44:11,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:11,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658019466] [2022-11-23 15:44:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:11,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:11,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658019466] [2022-11-23 15:44:11,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658019466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:11,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:11,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:44:11,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165609394] [2022-11-23 15:44:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:11,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:44:11,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:44:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:44:11,886 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:12,099 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2022-11-23 15:44:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:44:12,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-23 15:44:12,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:12,101 INFO L225 Difference]: With dead ends: 138 [2022-11-23 15:44:12,101 INFO L226 Difference]: Without dead ends: 138 [2022-11-23 15:44:12,101 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 [2022-11-23 15:44:12,102 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 225 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:12,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 58 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:44:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-23 15:44:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2022-11-23 15:44:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.8395061728395061) internal successors, (149), 128 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2022-11-23 15:44:12,110 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 6 [2022-11-23 15:44:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:12,110 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2022-11-23 15:44:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2022-11-23 15:44:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:44:12,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:12,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:44:12,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:44:12,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2130162286, now seen corresponding path program 1 times [2022-11-23 15:44:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:12,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385078279] [2022-11-23 15:44:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:12,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:12,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:12,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385078279] [2022-11-23 15:44:12,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385078279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:12,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:12,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:44:12,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444597106] [2022-11-23 15:44:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:44:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:12,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:44:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:44:12,388 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:12,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:12,651 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2022-11-23 15:44:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:44:12,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-23 15:44:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:12,653 INFO L225 Difference]: With dead ends: 136 [2022-11-23 15:44:12,653 INFO L226 Difference]: Without dead ends: 136 [2022-11-23 15:44:12,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:44:12,654 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 245 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:12,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 168 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:44:12,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-23 15:44:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2022-11-23 15:44:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 85 states have (on average 1.811764705882353) internal successors, (154), 132 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) [2022-11-23 15:44:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2022-11-23 15:44:12,661 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 6 [2022-11-23 15:44:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:12,661 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2022-11-23 15:44:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2022-11-23 15:44:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:44:12,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:12,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:44:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:44:12,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1613471248, now seen corresponding path program 1 times [2022-11-23 15:44:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:12,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581926264] [2022-11-23 15:44:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:12,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:12,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581926264] [2022-11-23 15:44:12,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581926264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:12,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:12,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:44:12,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651795080] [2022-11-23 15:44:12,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:12,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:44:12,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:44:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:44:12,726 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:12,805 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2022-11-23 15:44:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:44:12,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:44:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:12,807 INFO L225 Difference]: With dead ends: 163 [2022-11-23 15:44:12,807 INFO L226 Difference]: Without dead ends: 163 [2022-11-23 15:44:12,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:44:12,808 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 85 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:12,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 150 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:44:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-23 15:44:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2022-11-23 15:44:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 87 states have (on average 1.7816091954022988) internal successors, (155), 134 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) [2022-11-23 15:44:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 155 transitions. [2022-11-23 15:44:12,815 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 155 transitions. Word has length 8 [2022-11-23 15:44:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 155 transitions. [2022-11-23 15:44:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 155 transitions. [2022-11-23 15:44:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:44:12,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:12,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:44:12,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:44:12,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1613126838, now seen corresponding path program 1 times [2022-11-23 15:44:12,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:12,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236837946] [2022-11-23 15:44:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:12,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:12,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236837946] [2022-11-23 15:44:12,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236837946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:12,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:12,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:44:12,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110190041] [2022-11-23 15:44:12,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:12,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:44:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:44:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:44:12,976 INFO L87 Difference]: Start difference. First operand 135 states and 155 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:13,211 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2022-11-23 15:44:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:44:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:44:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:13,213 INFO L225 Difference]: With dead ends: 140 [2022-11-23 15:44:13,213 INFO L226 Difference]: Without dead ends: 140 [2022-11-23 15:44:13,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:44:13,214 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 80 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:13,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 195 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:44:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-23 15:44:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2022-11-23 15:44:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 87 states have (on average 1.7701149425287357) internal successors, (154), 133 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) [2022-11-23 15:44:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2022-11-23 15:44:13,220 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 8 [2022-11-23 15:44:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:13,220 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2022-11-23 15:44:13,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2022-11-23 15:44:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:44:13,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:13,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:44:13,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:44:13,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1613126837, now seen corresponding path program 1 times [2022-11-23 15:44:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:13,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021532037] [2022-11-23 15:44:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:13,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:13,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021532037] [2022-11-23 15:44:13,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021532037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:13,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:13,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:44:13,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126349915] [2022-11-23 15:44:13,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:13,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:44:13,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:44:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:44:13,384 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:13,611 INFO L93 Difference]: Finished difference Result 129 states and 149 transitions. [2022-11-23 15:44:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:44:13,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:44:13,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:13,612 INFO L225 Difference]: With dead ends: 129 [2022-11-23 15:44:13,612 INFO L226 Difference]: Without dead ends: 129 [2022-11-23 15:44:13,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:44:13,613 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 8 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:13,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 261 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:44:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-23 15:44:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2022-11-23 15:44:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.7469879518072289) internal successors, (145), 124 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2022-11-23 15:44:13,618 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 8 [2022-11-23 15:44:13,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:13,619 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2022-11-23 15:44:13,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2022-11-23 15:44:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:44:13,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:13,620 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:44:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:44:13,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1672581694, now seen corresponding path program 1 times [2022-11-23 15:44:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:13,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567082890] [2022-11-23 15:44:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:44:13,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:13,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567082890] [2022-11-23 15:44:13,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567082890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:13,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:13,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:44:13,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687755448] [2022-11-23 15:44:13,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:13,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:44:13,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:13,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:44:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:44:13,704 INFO L87 Difference]: Start difference. First operand 125 states and 145 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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) [2022-11-23 15:44:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:13,863 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2022-11-23 15:44:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:44:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 15 [2022-11-23 15:44:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:13,865 INFO L225 Difference]: With dead ends: 199 [2022-11-23 15:44:13,865 INFO L226 Difference]: Without dead ends: 199 [2022-11-23 15:44:13,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:44:13,869 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 258 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:13,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 121 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:44:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-23 15:44:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 125. [2022-11-23 15:44:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 124 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2022-11-23 15:44:13,881 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 15 [2022-11-23 15:44:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:13,881 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2022-11-23 15:44:13,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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) [2022-11-23 15:44:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2022-11-23 15:44:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:44:13,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:13,883 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:44:13,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:44:13,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2022-11-23 15:44:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:13,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1033367432, now seen corresponding path program 1 times [2022-11-23 15:44:13,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:13,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829387362] [2022-11-23 15:44:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:13,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:14,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:14,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829387362] [2022-11-23 15:44:14,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829387362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:14,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399541235] [2022-11-23 15:44:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:14,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:14,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:14,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8600532-7df2-460a-b996-3ae545b5cf3d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:44:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:14,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:44:14,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:14,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:44:14,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:44:14,592 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 17 treesize of output 21 [2022-11-23 15:44:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:14,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399541235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:44:14,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1772119971] [2022-11-23 15:44:14,679 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 15:44:14,679 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:44:14,683 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:44:14,689 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:44:14,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:44:14,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,767 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 [2022-11-23 15:44:14,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:44:14,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,812 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 [2022-11-23 15:44:14,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-23 15:44:14,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,852 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 [2022-11-23 15:44:14,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 15:44:14,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 15:44:14,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,946 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 [2022-11-23 15:44:14,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:14,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 15:44:15,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 15:44:15,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 15:44:15,143 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 15:44:15,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-23 15:44:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,179 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 39 treesize of output 33 [2022-11-23 15:44:15,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:15,211 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 15:44:15,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-23 15:44:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,276 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 15:44:15,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 50 [2022-11-23 15:44:15,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,297 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 41 treesize of output 24 [2022-11-23 15:44:15,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,316 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 [2022-11-23 15:44:15,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2022-11-23 15:44:15,474 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 15:44:15,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 93 [2022-11-23 15:44:15,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,499 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 [2022-11-23 15:44:15,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,517 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 33 treesize of output 24 [2022-11-23 15:44:15,629 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-23 15:44:15,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 252 treesize of output 149 [2022-11-23 15:44:15,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,689 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-23 15:44:15,690 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 156 [2022-11-23 15:44:15,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,720 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 50 treesize of output 47 [2022-11-23 15:44:15,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:15,926 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-23 15:44:15,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 487 treesize of output 368 [2022-11-23 15:44:15,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:15,963 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-23 15:44:15,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 487 treesize of output 457 [2022-11-23 15:44:15,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:15,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:16,044 INFO L321 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-11-23 15:44:16,045 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 7 case distinctions, treesize of input 481 treesize of output 483 [2022-11-23 15:44:16,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:16,334 INFO L321 Elim1Store]: treesize reduction 278, result has 12.0 percent of original size [2022-11-23 15:44:16,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 489 treesize of output 492 [2022-11-23 15:44:16,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:16,574 INFO L321 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-11-23 15:44:16,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 606 treesize of output 455 [2022-11-23 15:44:16,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:16,674 INFO L321 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2022-11-23 15:44:16,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 542 treesize of output 520 [2022-11-23 15:44:16,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:16,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:16,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:16,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:16,833 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-23 15:44:16,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 547 treesize of output 533 [2022-11-23 15:44:17,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:17,516 INFO L321 Elim1Store]: treesize reduction 184, result has 15.2 percent of original size [2022-11-23 15:44:17,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 1255 treesize of output 756 [2022-11-23 15:44:17,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:17,680 INFO L321 Elim1Store]: treesize reduction 204, result has 13.9 percent of original size [2022-11-23 15:44:17,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 884 treesize of output 733 [2022-11-23 15:44:17,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:17,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:17,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:44:17,962 INFO L321 Elim1Store]: treesize reduction 560, result has 10.7 percent of original size [2022-11-23 15:44:17,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 789 treesize of output 764 [2022-11-23 15:44:18,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 15:44:18,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-23 15:44:18,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 15:44:18,779 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 15:44:18,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 15:44:18,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 15:44:18,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-23 15:44:18,811 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 25 treesize of output 13 [2022-11-23 15:44:18,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:44:18,887 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 15:44:18,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 39 [2022-11-23 15:44:18,907 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 26 treesize of output 21 [2022-11-23 15:44:18,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 15:44:18,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:44:18,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 15:44:18,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 15:44:19,110 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 15:44:19,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 15:44:19,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 15:44:19,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:19,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:19,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:19,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:44:19,267 INFO L321 Elim1Store]: treesize reduction 76, result has 39.7 percent of original size [2022-11-23 15:44:19,268 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 8 case distinctions, treesize of input 213 treesize of output 236 [2022-11-23 15:44:19,314 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 15:44:19,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 202 [2022-11-23 15:44:19,362 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 15:44:19,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 206 [2022-11-23 15:44:20,590 INFO L321 Elim1Store]: treesize reduction 118, result has 40.1 percent of original size [2022-11-23 15:44:20,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 874 treesize of output 780 [2022-11-23 15:44:20,819 INFO L321 Elim1Store]: treesize reduction 118, result has 40.1 percent of original size [2022-11-23 15:44:20,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 742 treesize of output 752 [2022-11-23 15:44:21,038 INFO L321 Elim1Store]: treesize reduction 306, result has 20.1 percent of original size [2022-11-23 15:44:21,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 694 treesize of output 703 [2022-11-23 15:46:41,107 WARN L233 SmtUtils]: Spent 25.27s on a formula simplification that was a NOOP. DAG size: 1912 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:47:16,380 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification that was a NOOP. DAG size: 1901 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:50:30,949 WARN L233 SmtUtils]: Spent 38.31s on a formula simplification. DAG size of input: 2757 DAG size of output: 2757 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:54:41,689 WARN L233 SmtUtils]: Spent 1.21m on a formula simplification that was a NOOP. DAG size: 2754 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:56:44,094 WARN L233 SmtUtils]: Spent 59.68s on a formula simplification that was a NOOP. DAG size: 2752 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:57:37,350 WARN L233 SmtUtils]: Spent 27.02s on a formula simplification that was a NOOP. DAG size: 2745 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)