./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0521.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:52:36,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:52:36,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:52:36,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:52:36,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:52:36,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:52:36,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:52:36,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:52:36,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:52:36,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:52:36,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:52:36,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:52:36,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:52:36,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:52:36,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:52:36,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:52:36,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:52:36,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:52:36,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:52:36,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:52:36,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:52:36,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:52:36,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:52:36,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:52:36,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:52:36,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:52:36,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:52:36,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:52:36,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:52:36,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:52:36,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:52:36,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:52:36,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:52:36,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:52:36,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:52:36,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:52:36,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:52:36,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:52:36,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:52:36,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:52:36,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:52:36,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 14:52:36,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:52:36,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:52:36,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:52:36,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:52:36,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:52:36,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:52:36,328 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:52:36,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:52:36,329 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:52:36,329 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:52:36,329 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:52:36,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:52:36,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:52:36,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:52:36,329 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:52:36,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:52:36,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:52:36,330 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:52:36,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:52:36,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:52:36,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:52:36,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:52:36,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:52:36,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:52:36,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:52:36,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:52:36,331 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:52:36,332 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:52:36,332 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:52:36,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:52:36,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:52:36,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:52:36,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:52:36,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:52:36,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:52:36,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:52:36,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:52:36,333 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:52:36,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:52:36,333 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:52:36,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:52:36,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:52:36,334 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_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2022-12-14 14:52:36,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:52:36,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:52:36,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:52:36,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:52:36,514 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:52:36,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/memsafety/test-0521.i [2022-12-14 14:52:39,111 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:52:39,301 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:52:39,302 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/sv-benchmarks/c/memsafety/test-0521.i [2022-12-14 14:52:39,310 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/data/dec83cf24/4f94fc44f69f42109a09f8a75a672b41/FLAGf29734dad [2022-12-14 14:52:39,321 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/data/dec83cf24/4f94fc44f69f42109a09f8a75a672b41 [2022-12-14 14:52:39,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:52:39,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:52:39,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:52:39,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:52:39,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:52:39,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ec764d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39, skipping insertion in model container [2022-12-14 14:52:39,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:52:39,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:52:39,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:52:39,558 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:52:39,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:52:39,607 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:52:39,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39 WrapperNode [2022-12-14 14:52:39,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:52:39,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:52:39,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:52:39,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:52:39,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,642 INFO L138 Inliner]: procedures = 125, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 305 [2022-12-14 14:52:39,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:52:39,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:52:39,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:52:39,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:52:39,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:52:39,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:52:39,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:52:39,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:52:39,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (1/1) ... [2022-12-14 14:52:39,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:52:39,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:52:39,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:52:39,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 14:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:52:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:52:39,848 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:52:39,850 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:52:40,421 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:52:40,472 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:52:40,472 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-14 14:52:40,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:52:40 BoogieIcfgContainer [2022-12-14 14:52:40,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:52:40,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:52:40,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:52:40,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:52:40,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:52:39" (1/3) ... [2022-12-14 14:52:40,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623e4bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:52:40, skipping insertion in model container [2022-12-14 14:52:40,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:52:39" (2/3) ... [2022-12-14 14:52:40,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623e4bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:52:40, skipping insertion in model container [2022-12-14 14:52:40,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:52:40" (3/3) ... [2022-12-14 14:52:40,480 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0521.i [2022-12-14 14:52:40,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:52:40,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2022-12-14 14:52:40,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:52:40,531 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;@5b955121, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:52:40,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2022-12-14 14:52:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 273 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:52:40,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:40,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:52:40,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 16140635, now seen corresponding path program 1 times [2022-12-14 14:52:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:40,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942471877] [2022-12-14 14:52:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:40,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:40,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942471877] [2022-12-14 14:52:40,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942471877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:40,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:40,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:40,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130451467] [2022-12-14 14:52:40,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:40,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:40,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:40,712 INFO L87 Difference]: Start difference. First operand has 274 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 273 states have internal predecessors, (302), 0 states have call successors, (0), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:40,993 INFO L93 Difference]: Finished difference Result 355 states and 389 transitions. [2022-12-14 14:52:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:40,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 14:52:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:41,006 INFO L225 Difference]: With dead ends: 355 [2022-12-14 14:52:41,006 INFO L226 Difference]: Without dead ends: 354 [2022-12-14 14:52:41,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,011 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 98 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:41,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 429 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-12-14 14:52:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 271. [2022-12-14 14:52:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 121 states have (on average 2.446280991735537) internal successors, (296), 270 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 296 transitions. [2022-12-14 14:52:41,052 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 296 transitions. Word has length 4 [2022-12-14 14:52:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:41,053 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 296 transitions. [2022-12-14 14:52:41,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 296 transitions. [2022-12-14 14:52:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:52:41,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:41,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:52:41,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:52:41,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:41,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash 16140636, now seen corresponding path program 1 times [2022-12-14 14:52:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:41,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904735320] [2022-12-14 14:52:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:41,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:41,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904735320] [2022-12-14 14:52:41,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904735320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:41,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:41,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:41,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125795752] [2022-12-14 14:52:41,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:41,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:41,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:41,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,161 INFO L87 Difference]: Start difference. First operand 271 states and 296 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:41,442 INFO L93 Difference]: Finished difference Result 473 states and 520 transitions. [2022-12-14 14:52:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 14:52:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:41,444 INFO L225 Difference]: With dead ends: 473 [2022-12-14 14:52:41,444 INFO L226 Difference]: Without dead ends: 473 [2022-12-14 14:52:41,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,445 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 229 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:41,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 507 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:52:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-12-14 14:52:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 269. [2022-12-14 14:52:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 121 states have (on average 2.4297520661157024) internal successors, (294), 268 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 294 transitions. [2022-12-14 14:52:41,454 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 294 transitions. Word has length 4 [2022-12-14 14:52:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:41,454 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 294 transitions. [2022-12-14 14:52:41,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 294 transitions. [2022-12-14 14:52:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:52:41,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:41,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:52:41,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:52:41,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash 499844386, now seen corresponding path program 1 times [2022-12-14 14:52:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:41,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647095973] [2022-12-14 14:52:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:41,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:41,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:41,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647095973] [2022-12-14 14:52:41,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647095973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:41,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:41,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:41,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319865765] [2022-12-14 14:52:41,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:41,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:41,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:41,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,487 INFO L87 Difference]: Start difference. First operand 269 states and 294 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:41,632 INFO L93 Difference]: Finished difference Result 253 states and 278 transitions. [2022-12-14 14:52:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:41,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 14:52:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:41,633 INFO L225 Difference]: With dead ends: 253 [2022-12-14 14:52:41,633 INFO L226 Difference]: Without dead ends: 253 [2022-12-14 14:52:41,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,634 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 71 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:41,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 293 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:41,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-12-14 14:52:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-12-14 14:52:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 121 states have (on average 2.2975206611570247) internal successors, (278), 252 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 278 transitions. [2022-12-14 14:52:41,643 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 278 transitions. Word has length 5 [2022-12-14 14:52:41,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:41,643 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 278 transitions. [2022-12-14 14:52:41,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 278 transitions. [2022-12-14 14:52:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:52:41,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:41,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:52:41,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:52:41,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash 499844387, now seen corresponding path program 1 times [2022-12-14 14:52:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:41,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570000582] [2022-12-14 14:52:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:41,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:41,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570000582] [2022-12-14 14:52:41,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570000582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:41,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:41,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703577234] [2022-12-14 14:52:41,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:41,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,708 INFO L87 Difference]: Start difference. First operand 253 states and 278 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:41,870 INFO L93 Difference]: Finished difference Result 237 states and 262 transitions. [2022-12-14 14:52:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 14:52:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:41,871 INFO L225 Difference]: With dead ends: 237 [2022-12-14 14:52:41,872 INFO L226 Difference]: Without dead ends: 237 [2022-12-14 14:52:41,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,873 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 55 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:41,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 301 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-12-14 14:52:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-12-14 14:52:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 121 states have (on average 2.165289256198347) internal successors, (262), 236 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 262 transitions. [2022-12-14 14:52:41,880 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 262 transitions. Word has length 5 [2022-12-14 14:52:41,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:41,880 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 262 transitions. [2022-12-14 14:52:41,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:41,880 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 262 transitions. [2022-12-14 14:52:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 14:52:41,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:41,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 14:52:41,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:52:41,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:41,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216808, now seen corresponding path program 1 times [2022-12-14 14:52:41,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:41,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581129075] [2022-12-14 14:52:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:41,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:41,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:41,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581129075] [2022-12-14 14:52:41,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581129075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:41,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:41,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705518876] [2022-12-14 14:52:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:41,949 INFO L87 Difference]: Start difference. First operand 237 states and 262 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 14:52:42,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:42,154 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2022-12-14 14:52:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:42,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-14 14:52:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:42,155 INFO L225 Difference]: With dead ends: 288 [2022-12-14 14:52:42,156 INFO L226 Difference]: Without dead ends: 288 [2022-12-14 14:52:42,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:42,156 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 62 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:42,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 363 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-12-14 14:52:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 235. [2022-12-14 14:52:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 234 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 260 transitions. [2022-12-14 14:52:42,162 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 260 transitions. Word has length 6 [2022-12-14 14:52:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:42,162 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 260 transitions. [2022-12-14 14:52:42,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 14:52:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 260 transitions. [2022-12-14 14:52:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 14:52:42,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:42,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 14:52:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:52:42,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216807, now seen corresponding path program 1 times [2022-12-14 14:52:42,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:42,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436136106] [2022-12-14 14:52:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:42,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:42,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436136106] [2022-12-14 14:52:42,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436136106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:42,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:42,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439854214] [2022-12-14 14:52:42,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:42,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:42,231 INFO L87 Difference]: Start difference. First operand 235 states and 260 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 14:52:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:42,485 INFO L93 Difference]: Finished difference Result 407 states and 454 transitions. [2022-12-14 14:52:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:42,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-14 14:52:42,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:42,486 INFO L225 Difference]: With dead ends: 407 [2022-12-14 14:52:42,486 INFO L226 Difference]: Without dead ends: 407 [2022-12-14 14:52:42,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:42,488 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 193 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:42,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 441 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-12-14 14:52:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 233. [2022-12-14 14:52:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 121 states have (on average 2.1322314049586777) internal successors, (258), 232 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 258 transitions. [2022-12-14 14:52:42,494 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 258 transitions. Word has length 6 [2022-12-14 14:52:42,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:42,494 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 258 transitions. [2022-12-14 14:52:42,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 14:52:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 258 transitions. [2022-12-14 14:52:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:52:42,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:42,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:42,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:52:42,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:42,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash -685881597, now seen corresponding path program 1 times [2022-12-14 14:52:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:42,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389583356] [2022-12-14 14:52:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:42,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:42,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389583356] [2022-12-14 14:52:42,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389583356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:42,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:42,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:52:42,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252212882] [2022-12-14 14:52:42,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:42,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:52:42,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:42,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:52:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:52:42,537 INFO L87 Difference]: Start difference. First operand 233 states and 258 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:42,691 INFO L93 Difference]: Finished difference Result 575 states and 638 transitions. [2022-12-14 14:52:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:52:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 14:52:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:42,693 INFO L225 Difference]: With dead ends: 575 [2022-12-14 14:52:42,693 INFO L226 Difference]: Without dead ends: 575 [2022-12-14 14:52:42,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:42,694 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 507 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:42,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 636 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-12-14 14:52:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 238. [2022-12-14 14:52:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 126 states have (on average 2.0952380952380953) internal successors, (264), 237 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2022-12-14 14:52:42,699 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 7 [2022-12-14 14:52:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:42,699 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2022-12-14 14:52:42,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2022-12-14 14:52:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:52:42,699 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:42,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:42,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:52:42,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 281311273, now seen corresponding path program 1 times [2022-12-14 14:52:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:42,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558557412] [2022-12-14 14:52:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:42,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558557412] [2022-12-14 14:52:42,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558557412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:42,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:42,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:52:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725152647] [2022-12-14 14:52:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:42,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:52:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:52:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:52:42,810 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:43,069 INFO L93 Difference]: Finished difference Result 571 states and 634 transitions. [2022-12-14 14:52:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:52:43,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 14:52:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:43,070 INFO L225 Difference]: With dead ends: 571 [2022-12-14 14:52:43,070 INFO L226 Difference]: Without dead ends: 571 [2022-12-14 14:52:43,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:52:43,071 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 499 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:43,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1022 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-14 14:52:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 241. [2022-12-14 14:52:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 240 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 267 transitions. [2022-12-14 14:52:43,075 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 267 transitions. Word has length 11 [2022-12-14 14:52:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:43,076 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 267 transitions. [2022-12-14 14:52:43,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 267 transitions. [2022-12-14 14:52:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:52:43,076 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:43,076 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:52:43,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -589468412, now seen corresponding path program 1 times [2022-12-14 14:52:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:43,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873961785] [2022-12-14 14:52:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:43,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:43,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873961785] [2022-12-14 14:52:43,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873961785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:43,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:43,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:52:43,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277347667] [2022-12-14 14:52:43,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:43,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:52:43,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:52:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:52:43,177 INFO L87 Difference]: Start difference. First operand 241 states and 267 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:43,463 INFO L93 Difference]: Finished difference Result 279 states and 310 transitions. [2022-12-14 14:52:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:52:43,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 14:52:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:43,465 INFO L225 Difference]: With dead ends: 279 [2022-12-14 14:52:43,465 INFO L226 Difference]: Without dead ends: 279 [2022-12-14 14:52:43,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:52:43,466 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 182 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:43,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 624 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:52:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-12-14 14:52:43,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 243. [2022-12-14 14:52:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 133 states have (on average 2.045112781954887) internal successors, (272), 242 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 272 transitions. [2022-12-14 14:52:43,472 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 272 transitions. Word has length 13 [2022-12-14 14:52:43,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:43,472 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 272 transitions. [2022-12-14 14:52:43,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 272 transitions. [2022-12-14 14:52:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:52:43,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:43,473 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:43,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 14:52:43,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:43,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:43,474 INFO L85 PathProgramCache]: Analyzing trace with hash -589468411, now seen corresponding path program 1 times [2022-12-14 14:52:43,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:43,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933708612] [2022-12-14 14:52:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:43,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:43,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933708612] [2022-12-14 14:52:43,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933708612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:43,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:43,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:52:43,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095616303] [2022-12-14 14:52:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:43,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:52:43,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:52:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:43,634 INFO L87 Difference]: Start difference. First operand 243 states and 272 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:43,970 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2022-12-14 14:52:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:52:43,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 14:52:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:43,971 INFO L225 Difference]: With dead ends: 391 [2022-12-14 14:52:43,971 INFO L226 Difference]: Without dead ends: 391 [2022-12-14 14:52:43,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:52:43,972 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 446 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:43,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 670 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:52:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-12-14 14:52:43,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 242. [2022-12-14 14:52:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 133 states have (on average 2.037593984962406) internal successors, (271), 241 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2022-12-14 14:52:43,979 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 13 [2022-12-14 14:52:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:43,979 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2022-12-14 14:52:43,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2022-12-14 14:52:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:52:43,980 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:43,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 14:52:43,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash -244042145, now seen corresponding path program 1 times [2022-12-14 14:52:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:43,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895981536] [2022-12-14 14:52:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:44,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:44,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895981536] [2022-12-14 14:52:44,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895981536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:44,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:44,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:52:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807089417] [2022-12-14 14:52:44,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:44,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:52:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:52:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:44,038 INFO L87 Difference]: Start difference. First operand 242 states and 271 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:44,183 INFO L93 Difference]: Finished difference Result 356 states and 396 transitions. [2022-12-14 14:52:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:52:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 14:52:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:44,185 INFO L225 Difference]: With dead ends: 356 [2022-12-14 14:52:44,185 INFO L226 Difference]: Without dead ends: 356 [2022-12-14 14:52:44,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:52:44,185 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 218 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:44,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 825 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-12-14 14:52:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 297. [2022-12-14 14:52:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 188 states have (on average 2.074468085106383) internal successors, (390), 296 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 390 transitions. [2022-12-14 14:52:44,190 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 390 transitions. Word has length 13 [2022-12-14 14:52:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:44,190 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 390 transitions. [2022-12-14 14:52:44,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 390 transitions. [2022-12-14 14:52:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 14:52:44,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:44,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:44,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 14:52:44,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:44,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:44,191 INFO L85 PathProgramCache]: Analyzing trace with hash 633132918, now seen corresponding path program 1 times [2022-12-14 14:52:44,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:44,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177602860] [2022-12-14 14:52:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:44,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:44,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177602860] [2022-12-14 14:52:44,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177602860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:44,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:44,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:52:44,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302998320] [2022-12-14 14:52:44,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:44,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:44,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:44,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:44,212 INFO L87 Difference]: Start difference. First operand 297 states and 390 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) 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) [2022-12-14 14:52:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:44,268 INFO L93 Difference]: Finished difference Result 284 states and 367 transitions. [2022-12-14 14:52:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:44,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) 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 14 [2022-12-14 14:52:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:44,269 INFO L225 Difference]: With dead ends: 284 [2022-12-14 14:52:44,269 INFO L226 Difference]: Without dead ends: 284 [2022-12-14 14:52:44,270 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 [2022-12-14 14:52:44,270 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 193 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:44,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 261 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-12-14 14:52:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-12-14 14:52:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 175 states have (on average 2.097142857142857) internal successors, (367), 283 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 367 transitions. [2022-12-14 14:52:44,280 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 367 transitions. Word has length 14 [2022-12-14 14:52:44,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:44,281 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 367 transitions. [2022-12-14 14:52:44,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) 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) [2022-12-14 14:52:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 367 transitions. [2022-12-14 14:52:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 14:52:44,281 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:44,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:44,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 14:52:44,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:44,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:44,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896675, now seen corresponding path program 1 times [2022-12-14 14:52:44,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:44,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125811811] [2022-12-14 14:52:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:44,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:44,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:44,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125811811] [2022-12-14 14:52:44,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125811811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:44,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:44,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:44,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975362727] [2022-12-14 14:52:44,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:44,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:44,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:44,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:44,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:44,314 INFO L87 Difference]: Start difference. First operand 284 states and 367 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:44,439 INFO L93 Difference]: Finished difference Result 268 states and 335 transitions. [2022-12-14 14:52:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 14:52:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:44,440 INFO L225 Difference]: With dead ends: 268 [2022-12-14 14:52:44,440 INFO L226 Difference]: Without dead ends: 268 [2022-12-14 14:52:44,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:44,441 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 71 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:44,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 235 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-12-14 14:52:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-12-14 14:52:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 175 states have (on average 1.9142857142857144) internal successors, (335), 267 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 335 transitions. [2022-12-14 14:52:44,445 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 335 transitions. Word has length 15 [2022-12-14 14:52:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:44,445 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 335 transitions. [2022-12-14 14:52:44,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 335 transitions. [2022-12-14 14:52:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 14:52:44,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:44,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 14:52:44,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896676, now seen corresponding path program 1 times [2022-12-14 14:52:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964709998] [2022-12-14 14:52:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:44,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:44,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964709998] [2022-12-14 14:52:44,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964709998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:44,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:44,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:52:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978999136] [2022-12-14 14:52:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:44,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:44,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:44,479 INFO L87 Difference]: Start difference. First operand 268 states and 335 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:44,601 INFO L93 Difference]: Finished difference Result 252 states and 303 transitions. [2022-12-14 14:52:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:44,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 14:52:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:44,602 INFO L225 Difference]: With dead ends: 252 [2022-12-14 14:52:44,602 INFO L226 Difference]: Without dead ends: 252 [2022-12-14 14:52:44,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:44,603 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 55 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:44,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-12-14 14:52:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-12-14 14:52:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 175 states have (on average 1.7314285714285715) internal successors, (303), 251 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 303 transitions. [2022-12-14 14:52:44,608 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 303 transitions. Word has length 15 [2022-12-14 14:52:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:44,609 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 303 transitions. [2022-12-14 14:52:44,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 303 transitions. [2022-12-14 14:52:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 14:52:44,609 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:44,610 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:44,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 14:52:44,610 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:44,610 INFO L85 PathProgramCache]: Analyzing trace with hash 915322282, now seen corresponding path program 1 times [2022-12-14 14:52:44,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:44,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998213823] [2022-12-14 14:52:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:44,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:44,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998213823] [2022-12-14 14:52:44,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998213823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:44,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:44,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:52:44,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556604296] [2022-12-14 14:52:44,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:44,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:52:44,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:44,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:52:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:44,668 INFO L87 Difference]: Start difference. First operand 252 states and 303 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:44,788 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2022-12-14 14:52:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:52:44,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-12-14 14:52:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:44,790 INFO L225 Difference]: With dead ends: 272 [2022-12-14 14:52:44,790 INFO L226 Difference]: Without dead ends: 272 [2022-12-14 14:52:44,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:52:44,790 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 567 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:44,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 490 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-12-14 14:52:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 252. [2022-12-14 14:52:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 175 states have (on average 1.7257142857142858) internal successors, (302), 251 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 302 transitions. [2022-12-14 14:52:44,796 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 302 transitions. Word has length 17 [2022-12-14 14:52:44,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:44,796 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 302 transitions. [2022-12-14 14:52:44,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 302 transitions. [2022-12-14 14:52:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 14:52:44,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:44,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:44,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 14:52:44,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:44,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash 552141732, now seen corresponding path program 1 times [2022-12-14 14:52:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:44,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122852866] [2022-12-14 14:52:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:44,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:44,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122852866] [2022-12-14 14:52:44,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122852866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:44,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:44,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:52:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727641126] [2022-12-14 14:52:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:52:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:52:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:44,867 INFO L87 Difference]: Start difference. First operand 252 states and 302 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:45,024 INFO L93 Difference]: Finished difference Result 339 states and 384 transitions. [2022-12-14 14:52:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:52:45,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-12-14 14:52:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:45,025 INFO L225 Difference]: With dead ends: 339 [2022-12-14 14:52:45,025 INFO L226 Difference]: Without dead ends: 339 [2022-12-14 14:52:45,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:52:45,026 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 243 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:45,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 696 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-12-14 14:52:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 250. [2022-12-14 14:52:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 173 states have (on average 1.716763005780347) internal successors, (297), 249 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 297 transitions. [2022-12-14 14:52:45,029 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 297 transitions. Word has length 17 [2022-12-14 14:52:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:45,029 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 297 transitions. [2022-12-14 14:52:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 297 transitions. [2022-12-14 14:52:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 14:52:45,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:45,030 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:45,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 14:52:45,030 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash 944178417, now seen corresponding path program 1 times [2022-12-14 14:52:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:45,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021985555] [2022-12-14 14:52:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:45,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:45,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021985555] [2022-12-14 14:52:45,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021985555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:45,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:45,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 14:52:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059915192] [2022-12-14 14:52:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:45,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 14:52:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:45,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 14:52:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:52:45,292 INFO L87 Difference]: Start difference. First operand 250 states and 297 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:45,920 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2022-12-14 14:52:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:52:45,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 14:52:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:45,921 INFO L225 Difference]: With dead ends: 252 [2022-12-14 14:52:45,921 INFO L226 Difference]: Without dead ends: 252 [2022-12-14 14:52:45,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-12-14 14:52:45,922 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 244 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:45,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 871 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:52:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-12-14 14:52:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 249. [2022-12-14 14:52:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 173 states have (on average 1.7109826589595376) internal successors, (296), 248 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2022-12-14 14:52:45,925 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 19 [2022-12-14 14:52:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:45,925 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2022-12-14 14:52:45,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2022-12-14 14:52:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 14:52:45,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:45,926 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:45,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 14:52:45,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash 944178418, now seen corresponding path program 1 times [2022-12-14 14:52:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:45,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536368748] [2022-12-14 14:52:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:45,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:46,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536368748] [2022-12-14 14:52:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536368748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:46,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:46,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 14:52:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982733393] [2022-12-14 14:52:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:46,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 14:52:46,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 14:52:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:52:46,311 INFO L87 Difference]: Start difference. First operand 249 states and 296 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:47,505 INFO L93 Difference]: Finished difference Result 473 states and 560 transitions. [2022-12-14 14:52:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 14:52:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 14:52:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:47,508 INFO L225 Difference]: With dead ends: 473 [2022-12-14 14:52:47,508 INFO L226 Difference]: Without dead ends: 473 [2022-12-14 14:52:47,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-12-14 14:52:47,509 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 455 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:47,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1517 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 14:52:47,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-12-14 14:52:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 248. [2022-12-14 14:52:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 173 states have (on average 1.7052023121387283) internal successors, (295), 247 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 295 transitions. [2022-12-14 14:52:47,514 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 295 transitions. Word has length 19 [2022-12-14 14:52:47,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:47,514 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 295 transitions. [2022-12-14 14:52:47,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:47,514 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 295 transitions. [2022-12-14 14:52:47,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 14:52:47,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:47,514 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:47,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 14:52:47,514 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1116123431, now seen corresponding path program 1 times [2022-12-14 14:52:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:47,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769899964] [2022-12-14 14:52:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:47,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:47,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769899964] [2022-12-14 14:52:47,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769899964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:47,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:47,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 14:52:47,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492048688] [2022-12-14 14:52:47,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:47,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:52:47,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:52:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:52:47,626 INFO L87 Difference]: Start difference. First operand 248 states and 295 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:47,909 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2022-12-14 14:52:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:52:47,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 14:52:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:47,910 INFO L225 Difference]: With dead ends: 279 [2022-12-14 14:52:47,910 INFO L226 Difference]: Without dead ends: 279 [2022-12-14 14:52:47,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-12-14 14:52:47,910 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 638 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:47,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 936 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-12-14 14:52:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 248. [2022-12-14 14:52:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 173 states have (on average 1.699421965317919) internal successors, (294), 247 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 294 transitions. [2022-12-14 14:52:47,913 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 294 transitions. Word has length 21 [2022-12-14 14:52:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:47,913 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 294 transitions. [2022-12-14 14:52:47,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 294 transitions. [2022-12-14 14:52:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 14:52:47,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:47,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:47,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 14:52:47,914 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash -936319035, now seen corresponding path program 1 times [2022-12-14 14:52:47,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:47,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785271782] [2022-12-14 14:52:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:47,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:48,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785271782] [2022-12-14 14:52:48,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785271782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:48,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:48,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 14:52:48,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275105803] [2022-12-14 14:52:48,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:48,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:52:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:52:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:52:48,010 INFO L87 Difference]: Start difference. First operand 248 states and 294 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:48,246 INFO L93 Difference]: Finished difference Result 333 states and 377 transitions. [2022-12-14 14:52:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 14:52:48,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 14:52:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:48,247 INFO L225 Difference]: With dead ends: 333 [2022-12-14 14:52:48,247 INFO L226 Difference]: Without dead ends: 333 [2022-12-14 14:52:48,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:52:48,248 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 231 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:48,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 995 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-12-14 14:52:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 236. [2022-12-14 14:52:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 161 states have (on average 1.6956521739130435) internal successors, (273), 235 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 273 transitions. [2022-12-14 14:52:48,253 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 273 transitions. Word has length 21 [2022-12-14 14:52:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:48,253 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 273 transitions. [2022-12-14 14:52:48,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 273 transitions. [2022-12-14 14:52:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 14:52:48,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:48,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:48,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 14:52:48,254 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr151ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:48,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1038856689, now seen corresponding path program 1 times [2022-12-14 14:52:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:48,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036825403] [2022-12-14 14:52:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:48,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:48,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:48,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036825403] [2022-12-14 14:52:48,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036825403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:48,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:48,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:52:48,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9454456] [2022-12-14 14:52:48,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:48,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:52:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:52:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:48,338 INFO L87 Difference]: Start difference. First operand 236 states and 273 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:48,559 INFO L93 Difference]: Finished difference Result 243 states and 273 transitions. [2022-12-14 14:52:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:52:48,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 14:52:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:48,560 INFO L225 Difference]: With dead ends: 243 [2022-12-14 14:52:48,560 INFO L226 Difference]: Without dead ends: 241 [2022-12-14 14:52:48,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:48,561 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 24 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:48,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 461 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-14 14:52:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2022-12-14 14:52:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 160 states have (on average 1.69375) internal successors, (271), 234 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2022-12-14 14:52:48,563 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 271 transitions. Word has length 22 [2022-12-14 14:52:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:48,564 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 271 transitions. [2022-12-14 14:52:48,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 271 transitions. [2022-12-14 14:52:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:52:48,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:48,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:48,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 14:52:48,564 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 41868091, now seen corresponding path program 1 times [2022-12-14 14:52:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:48,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878085804] [2022-12-14 14:52:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:52:48,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878085804] [2022-12-14 14:52:48,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878085804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:48,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:48,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:52:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95989473] [2022-12-14 14:52:48,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:52:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:52:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:48,668 INFO L87 Difference]: Start difference. First operand 235 states and 271 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:48,842 INFO L93 Difference]: Finished difference Result 249 states and 288 transitions. [2022-12-14 14:52:48,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:52:48,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 14:52:48,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:48,844 INFO L225 Difference]: With dead ends: 249 [2022-12-14 14:52:48,844 INFO L226 Difference]: Without dead ends: 249 [2022-12-14 14:52:48,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:52:48,845 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 48 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:48,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 484 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-12-14 14:52:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 234. [2022-12-14 14:52:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 160 states have (on average 1.6875) internal successors, (270), 233 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 270 transitions. [2022-12-14 14:52:48,848 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 270 transitions. Word has length 23 [2022-12-14 14:52:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:48,848 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 270 transitions. [2022-12-14 14:52:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 270 transitions. [2022-12-14 14:52:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:52:48,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:48,849 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:48,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 14:52:48,849 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash 41868092, now seen corresponding path program 1 times [2022-12-14 14:52:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:48,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564432759] [2022-12-14 14:52:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:49,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:49,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564432759] [2022-12-14 14:52:49,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564432759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:49,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:49,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 14:52:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737034798] [2022-12-14 14:52:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 14:52:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 14:52:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:52:49,122 INFO L87 Difference]: Start difference. First operand 234 states and 270 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:49,687 INFO L93 Difference]: Finished difference Result 345 states and 400 transitions. [2022-12-14 14:52:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 14:52:49,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 14:52:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:49,688 INFO L225 Difference]: With dead ends: 345 [2022-12-14 14:52:49,688 INFO L226 Difference]: Without dead ends: 345 [2022-12-14 14:52:49,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-12-14 14:52:49,689 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 423 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:49,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 803 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:52:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-12-14 14:52:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 233. [2022-12-14 14:52:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.68125) internal successors, (269), 232 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 269 transitions. [2022-12-14 14:52:49,692 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 269 transitions. Word has length 23 [2022-12-14 14:52:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:49,692 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 269 transitions. [2022-12-14 14:52:49,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:49,692 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 269 transitions. [2022-12-14 14:52:49,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 14:52:49,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:49,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 14:52:49,693 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1764034550, now seen corresponding path program 1 times [2022-12-14 14:52:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:49,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656788309] [2022-12-14 14:52:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:49,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656788309] [2022-12-14 14:52:49,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656788309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:49,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:49,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:52:49,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638851549] [2022-12-14 14:52:49,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:49,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:49,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:52:49,717 INFO L87 Difference]: Start difference. First operand 233 states and 269 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:49,776 INFO L93 Difference]: Finished difference Result 220 states and 246 transitions. [2022-12-14 14:52:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:49,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 14:52:49,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:49,778 INFO L225 Difference]: With dead ends: 220 [2022-12-14 14:52:49,778 INFO L226 Difference]: Without dead ends: 203 [2022-12-14 14:52:49,778 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 [2022-12-14 14:52:49,779 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 26 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:49,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 334 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:52:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-14 14:52:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-12-14 14:52:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 130 states have (on average 1.7615384615384615) internal successors, (229), 202 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2022-12-14 14:52:49,783 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 24 [2022-12-14 14:52:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2022-12-14 14:52:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2022-12-14 14:52:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 14:52:49,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:49,783 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:49,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 14:52:49,784 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358732, now seen corresponding path program 1 times [2022-12-14 14:52:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:49,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172752833] [2022-12-14 14:52:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:49,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:49,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172752833] [2022-12-14 14:52:49,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172752833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:52:49,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429013561] [2022-12-14 14:52:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:49,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:52:49,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:52:49,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:52:49,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:52:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:50,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 14:52:50,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:52:50,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:52:50,088 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:52:50,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 14:52:50,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 14:52:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:50,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:52:50,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429013561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:50,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:52:50,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2022-12-14 14:52:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519787338] [2022-12-14 14:52:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:50,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:52:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:52:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-14 14:52:50,180 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:50,568 INFO L93 Difference]: Finished difference Result 334 states and 375 transitions. [2022-12-14 14:52:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:52:50,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 14:52:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:50,570 INFO L225 Difference]: With dead ends: 334 [2022-12-14 14:52:50,570 INFO L226 Difference]: Without dead ends: 334 [2022-12-14 14:52:50,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-12-14 14:52:50,571 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 476 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:50,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 424 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:52:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-12-14 14:52:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 206. [2022-12-14 14:52:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 205 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2022-12-14 14:52:50,576 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 25 [2022-12-14 14:52:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:50,576 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2022-12-14 14:52:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2022-12-14 14:52:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 14:52:50,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:50,577 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:50,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:52:50,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 14:52:50,778 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:50,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:50,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358733, now seen corresponding path program 1 times [2022-12-14 14:52:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:50,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949093510] [2022-12-14 14:52:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:50,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:50,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:50,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949093510] [2022-12-14 14:52:50,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949093510] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:52:50,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270423454] [2022-12-14 14:52:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:50,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:52:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:52:50,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:52:50,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:52:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 14:52:51,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:52:51,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 14:52:51,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 14:52:51,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 14:52:51,079 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:52:51,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 14:52:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:52:51,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:52:51,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270423454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:51,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:52:51,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2022-12-14 14:52:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130606952] [2022-12-14 14:52:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:52:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:52:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:52:51,086 INFO L87 Difference]: Start difference. First operand 206 states and 236 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:51,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:51,269 INFO L93 Difference]: Finished difference Result 227 states and 260 transitions. [2022-12-14 14:52:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:52:51,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 14:52:51,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:51,271 INFO L225 Difference]: With dead ends: 227 [2022-12-14 14:52:51,271 INFO L226 Difference]: Without dead ends: 227 [2022-12-14 14:52:51,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:52:51,272 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 454 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:51,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 187 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:52:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-14 14:52:51,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 207. [2022-12-14 14:52:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 206 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2022-12-14 14:52:51,275 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 25 [2022-12-14 14:52:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:51,276 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2022-12-14 14:52:51,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2022-12-14 14:52:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 14:52:51,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:51,276 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:51,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:52:51,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 14:52:51,478 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:51,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1726985257, now seen corresponding path program 1 times [2022-12-14 14:52:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501658759] [2022-12-14 14:52:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:51,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:52,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:52,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501658759] [2022-12-14 14:52:52,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501658759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:52,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:52:52,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 14:52:52,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729507303] [2022-12-14 14:52:52,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:52,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 14:52:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 14:52:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:52:52,079 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:52,828 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-12-14 14:52:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 14:52:52,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-14 14:52:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:52,829 INFO L225 Difference]: With dead ends: 208 [2022-12-14 14:52:52,829 INFO L226 Difference]: Without dead ends: 208 [2022-12-14 14:52:52,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-12-14 14:52:52,829 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 293 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:52,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1145 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:52:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-14 14:52:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-12-14 14:52:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.7352941176470589) internal successors, (236), 206 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2022-12-14 14:52:52,832 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 26 [2022-12-14 14:52:52,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:52,832 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2022-12-14 14:52:52,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:52:52,832 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2022-12-14 14:52:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:52:52,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:52,832 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:52,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 14:52:52,832 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:52:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1527445437, now seen corresponding path program 1 times [2022-12-14 14:52:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:52,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144548017] [2022-12-14 14:52:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:53,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:53,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144548017] [2022-12-14 14:52:53,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144548017] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:52:53,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932268439] [2022-12-14 14:52:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:53,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:52:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:52:53,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:52:53,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:52:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:53,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-14 14:52:53,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:52:53,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:52:53,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:52:53,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:52:53,563 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:52:53,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 14:52:53,578 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 18 [2022-12-14 14:52:53,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 14:52:53,621 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 14:52:53,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2022-12-14 14:52:53,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 14:52:53,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 14:52:53,686 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 14:52:53,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2022-12-14 14:52:53,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:53,763 INFO L321 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2022-12-14 14:52:53,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2022-12-14 14:52:53,770 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 14:52:53,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-12-14 14:52:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:53,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:52:54,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:52:54,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932268439] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:52:54,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709913448] [2022-12-14 14:52:54,364 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 14:52:54,364 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:52:54,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:52:54,371 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:52:54,371 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:52:54,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:52:54,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:52:54,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 14:52:54,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:52:54,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,463 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 [2022-12-14 14:52:54,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 14:52:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,489 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 [2022-12-14 14:52:54,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,501 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 [2022-12-14 14:52:54,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:52:54,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-14 14:52:54,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:52:54,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:52:54,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:52:54,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-12-14 14:52:54,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2022-12-14 14:52:54,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:54,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:54,710 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-12-14 14:52:54,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 180 treesize of output 144 [2022-12-14 14:52:54,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2022-12-14 14:52:54,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 99 [2022-12-14 14:52:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:54,817 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-12-14 14:52:54,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 131 [2022-12-14 14:52:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2022-12-14 14:52:54,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-12-14 14:52:54,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-12-14 14:52:54,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:54,940 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-12-14 14:52:54,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 138 [2022-12-14 14:52:54,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-14 14:52:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:54,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-12-14 14:52:55,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:55,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:55,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:55,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:55,136 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-12-14 14:52:55,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 483 treesize of output 492 [2022-12-14 14:52:55,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:55,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:55,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:55,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:55,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:55,209 INFO L321 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-12-14 14:52:55,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 506 treesize of output 466 [2022-12-14 14:52:55,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:55,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:55,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:55,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:55,232 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-12-14 14:52:55,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 611 treesize of output 570 [2022-12-14 14:52:55,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:55,640 INFO L321 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2022-12-14 14:52:55,641 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 1246 treesize of output 1227 [2022-12-14 14:52:56,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:56,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:56,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:56,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:56,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:56,312 INFO L321 Elim1Store]: treesize reduction 200, result has 17.0 percent of original size [2022-12-14 14:52:56,313 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 9 new quantified variables, introduced 18 case distinctions, treesize of input 3094 treesize of output 1883 [2022-12-14 14:52:56,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:56,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:56,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:56,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:56,429 INFO L321 Elim1Store]: treesize reduction 298, result has 17.9 percent of original size [2022-12-14 14:52:56,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 3084 treesize of output 2745 [2022-12-14 14:52:56,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:56,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:56,494 INFO L321 Elim1Store]: treesize reduction 147, result has 9.3 percent of original size [2022-12-14 14:52:56,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3044 treesize of output 2703 [2022-12-14 14:52:57,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:57,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:57,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:57,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:57,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:57,636 INFO L321 Elim1Store]: treesize reduction 242, result has 10.4 percent of original size [2022-12-14 14:52:57,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 5824 treesize of output 3473 [2022-12-14 14:52:57,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:57,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:57,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:57,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:57,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:52:57,804 INFO L321 Elim1Store]: treesize reduction 330, result has 8.8 percent of original size [2022-12-14 14:52:57,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 5842 treesize of output 5151 [2022-12-14 14:52:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:52:58,059 INFO L321 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2022-12-14 14:52:58,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 5825 treesize of output 5553 [2022-12-14 14:52:58,197 INFO L321 Elim1Store]: treesize reduction 184, result has 22.7 percent of original size [2022-12-14 14:52:58,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 5763 treesize of output 5115 [2022-12-14 14:53:01,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:01,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:01,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:01,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:01,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:01,219 INFO L321 Elim1Store]: treesize reduction 230, result has 10.9 percent of original size [2022-12-14 14:53:01,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 12602 treesize of output 7452 [2022-12-14 14:53:01,422 INFO L321 Elim1Store]: treesize reduction 262, result has 18.9 percent of original size [2022-12-14 14:53:01,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 12613 treesize of output 11417 [2022-12-14 14:53:01,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:01,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:01,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:01,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:01,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:01,791 INFO L321 Elim1Store]: treesize reduction 318, result has 9.1 percent of original size [2022-12-14 14:53:01,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 12340 treesize of output 10916 [2022-12-14 14:53:03,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:03,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:03,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:03,988 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:53:03,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 14:53:04,004 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:04,004 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 [2022-12-14 14:53:04,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:04,018 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 19 treesize of output 1 [2022-12-14 14:53:04,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 14:53:04,050 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 14:53:04,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2022-12-14 14:53:04,059 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 [2022-12-14 14:53:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-14 14:53:04,086 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 14:53:04,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 14:53:04,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-12-14 14:53:04,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:53:04,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-12-14 14:53:04,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:53:04,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:04,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:04,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:04,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:53:04,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 14:53:04,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:04,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:04,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:53:04,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:04,210 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:53:04,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:53:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:04,222 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:53:04,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:53:04,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:04,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:04,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:04,325 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:53:04,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-12-14 14:53:04,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:04,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:04,359 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:53:04,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-12-14 14:53:04,416 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:53:04,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:53:04,436 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:53:04,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:53:04,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:53:04,599 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-12-14 14:53:04,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-12-14 14:53:04,636 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:04,637 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 [2022-12-14 14:53:04,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:04,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:04,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:04,725 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:04,725 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 [2022-12-14 14:53:04,730 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 [2022-12-14 14:53:04,736 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 [2022-12-14 14:53:04,744 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 [2022-12-14 14:53:04,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:04,753 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:53:06,640 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16249#(and (= (select |#valid| |ULTIMATE.start_main_~#iter~0#1.base|) 1) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_#t~mem13#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#iter~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (not (= 1 (select |#valid| |ULTIMATE.start_main_#t~mem13#1.base|))) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2022-12-14 14:53:06,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:53:06,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:53:06,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2022-12-14 14:53:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435099063] [2022-12-14 14:53:06,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:53:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 14:53:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 14:53:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1487, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 14:53:06,643 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:07,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:53:07,592 INFO L93 Difference]: Finished difference Result 255 states and 289 transitions. [2022-12-14 14:53:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:53:07,592 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 14:53:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:53:07,593 INFO L225 Difference]: With dead ends: 255 [2022-12-14 14:53:07,593 INFO L226 Difference]: Without dead ends: 255 [2022-12-14 14:53:07,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 14:53:07,595 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 81 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:53:07,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1439 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 14:53:07,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-12-14 14:53:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 229. [2022-12-14 14:53:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 158 states have (on average 1.639240506329114) internal successors, (259), 228 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2022-12-14 14:53:07,599 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 27 [2022-12-14 14:53:07,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:07,599 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2022-12-14 14:53:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2022-12-14 14:53:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 14:53:07,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:07,600 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:07,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:53:07,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 14:53:07,801 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:53:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash 688966908, now seen corresponding path program 1 times [2022-12-14 14:53:07,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:07,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724041545] [2022-12-14 14:53:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:53:07,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:53:07,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724041545] [2022-12-14 14:53:07,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724041545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:53:07,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:53:07,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:53:07,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667597754] [2022-12-14 14:53:07,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:53:07,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:53:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:07,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:53:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:53:07,990 INFO L87 Difference]: Start difference. First operand 229 states and 259 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:53:08,149 INFO L93 Difference]: Finished difference Result 234 states and 264 transitions. [2022-12-14 14:53:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:53:08,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-14 14:53:08,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:53:08,151 INFO L225 Difference]: With dead ends: 234 [2022-12-14 14:53:08,151 INFO L226 Difference]: Without dead ends: 234 [2022-12-14 14:53:08,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:53:08,151 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 2 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:53:08,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 604 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:53:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-12-14 14:53:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-12-14 14:53:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 162 states have (on average 1.623456790123457) internal successors, (263), 232 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 263 transitions. [2022-12-14 14:53:08,155 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 263 transitions. Word has length 31 [2022-12-14 14:53:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:08,155 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 263 transitions. [2022-12-14 14:53:08,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 263 transitions. [2022-12-14 14:53:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:53:08,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:08,156 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 14:53:08,156 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:53:08,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash 373171140, now seen corresponding path program 2 times [2022-12-14 14:53:08,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:08,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480511803] [2022-12-14 14:53:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:08,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:53:09,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:53:09,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480511803] [2022-12-14 14:53:09,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480511803] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:53:09,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135475488] [2022-12-14 14:53:09,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:53:09,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:53:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:53:09,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:53:09,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:53:09,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:53:09,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:53:09,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-14 14:53:09,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:53:09,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:53:09,200 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:09,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:53:09,215 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:53:09,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-14 14:53:09,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:09,310 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 14:53:09,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2022-12-14 14:53:09,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:09,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:09,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 14:53:09,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:09,476 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 28 treesize of output 23 [2022-12-14 14:53:09,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:09,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:09,489 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 14:53:09,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 42 [2022-12-14 14:53:09,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:09,563 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 28 treesize of output 23 [2022-12-14 14:53:09,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:09,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:09,576 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 14:53:09,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 42 [2022-12-14 14:53:09,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 14:53:09,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:09,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:09,705 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-14 14:53:09,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2022-12-14 14:53:09,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:09,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:09,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2022-12-14 14:53:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:53:09,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:53:10,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:10,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2022-12-14 14:53:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:53:12,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135475488] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:53:12,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151731577] [2022-12-14 14:53:12,753 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 14:53:12,753 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:53:12,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:53:12,753 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:53:12,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:53:12,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:53:12,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 14:53:12,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:12,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:12,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,811 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 [2022-12-14 14:53:12,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,819 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 [2022-12-14 14:53:12,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,826 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 [2022-12-14 14:53:12,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 14:53:12,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:53:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:53:12,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-14 14:53:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:53:12,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:53:12,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-12-14 14:53:12,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 47 [2022-12-14 14:53:12,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:12,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:12,984 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 14:53:12,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 113 [2022-12-14 14:53:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:12,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 14:53:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2022-12-14 14:53:13,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,061 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-12-14 14:53:13,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 131 [2022-12-14 14:53:13,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-12-14 14:53:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-12-14 14:53:13,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2022-12-14 14:53:13,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,150 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-12-14 14:53:13,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 138 [2022-12-14 14:53:13,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-14 14:53:13,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-12-14 14:53:13,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,268 INFO L321 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-12-14 14:53:13,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 490 treesize of output 454 [2022-12-14 14:53:13,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,288 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-12-14 14:53:13,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 620 treesize of output 579 [2022-12-14 14:53:13,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:13,331 INFO L321 Elim1Store]: treesize reduction 154, result has 26.0 percent of original size [2022-12-14 14:53:13,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 614 treesize of output 629 [2022-12-14 14:53:13,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:13,708 INFO L321 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2022-12-14 14:53:13,708 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 1260 treesize of output 1237 [2022-12-14 14:53:14,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,115 INFO L321 Elim1Store]: treesize reduction 118, result has 22.9 percent of original size [2022-12-14 14:53:14,115 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 9 new quantified variables, introduced 18 case distinctions, treesize of input 1480 treesize of output 905 [2022-12-14 14:53:14,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,145 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-12-14 14:53:14,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 1472 treesize of output 1343 [2022-12-14 14:53:14,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,224 INFO L321 Elim1Store]: treesize reduction 234, result has 21.7 percent of original size [2022-12-14 14:53:14,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 1484 treesize of output 1426 [2022-12-14 14:53:14,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,585 INFO L321 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2022-12-14 14:53:14,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 1518 treesize of output 911 [2022-12-14 14:53:14,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,734 INFO L321 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2022-12-14 14:53:14,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 1519 treesize of output 1493 [2022-12-14 14:53:14,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:14,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:14,825 INFO L321 Elim1Store]: treesize reduction 232, result has 8.3 percent of original size [2022-12-14 14:53:14,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1512 treesize of output 1432 [2022-12-14 14:53:14,920 INFO L321 Elim1Store]: treesize reduction 128, result has 28.1 percent of original size [2022-12-14 14:53:14,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 1481 treesize of output 1381 [2022-12-14 14:53:15,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:15,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:15,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:15,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:15,787 INFO L321 Elim1Store]: treesize reduction 120, result has 11.1 percent of original size [2022-12-14 14:53:15,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 3098 treesize of output 1862 [2022-12-14 14:53:15,929 INFO L321 Elim1Store]: treesize reduction 198, result has 22.4 percent of original size [2022-12-14 14:53:15,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 3109 treesize of output 2901 [2022-12-14 14:53:15,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:15,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:15,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:15,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:16,033 INFO L321 Elim1Store]: treesize reduction 224, result has 8.6 percent of original size [2022-12-14 14:53:16,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3060 treesize of output 2879 [2022-12-14 14:53:16,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:16,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:16,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:16,551 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:53:16,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 14:53:16,569 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:16,569 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 [2022-12-14 14:53:16,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:16,585 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 19 treesize of output 1 [2022-12-14 14:53:16,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 14:53:16,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-14 14:53:16,608 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 [2022-12-14 14:53:16,635 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 14:53:16,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 14:53:16,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-12-14 14:53:16,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-12-14 14:53:16,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:53:16,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:53:16,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-12-14 14:53:16,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:16,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:16,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:16,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 14:53:16,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:53:16,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:53:16,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:16,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:16,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:16,777 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:53:16,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:53:16,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:16,792 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:53:16,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:53:16,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:16,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:16,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:16,874 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:53:16,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-12-14 14:53:16,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:16,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:16,903 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:53:16,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 66 [2022-12-14 14:53:16,950 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:53:16,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:53:16,971 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:53:16,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:53:16,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:53:17,153 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-12-14 14:53:17,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-12-14 14:53:17,254 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:17,255 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 [2022-12-14 14:53:17,274 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 14:53:17,274 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 1 [2022-12-14 14:53:17,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:17,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:17,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:17,366 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:17,366 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 [2022-12-14 14:53:17,370 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 [2022-12-14 14:53:17,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:17,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-14 14:53:17,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:17,389 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 [2022-12-14 14:53:17,391 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:53:21,208 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17470#(and (= (select |#valid| |ULTIMATE.start_main_~#iter~0#1.base|) 1) (or (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_15| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) 1) (not (= |ULTIMATE.start_main_~#iter~0#1.base| |v_ULTIMATE.start_main_#t~mem11#1.base_15|)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_14| Int)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4))) (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_14|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_15|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)))))) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_15| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) 1) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_14| Int)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4))) (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_14|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_15|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (not (= |ULTIMATE.start_main_~#iter~0#1.offset| (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)))))))) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_#t~mem13#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#iter~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (not (= 1 (select |#valid| |ULTIMATE.start_main_#t~mem13#1.base|))) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0))) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2022-12-14 14:53:21,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:53:21,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:53:21,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 14] total 37 [2022-12-14 14:53:21,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030021923] [2022-12-14 14:53:21,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:53:21,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 14:53:21,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 14:53:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3295, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 14:53:21,211 INFO L87 Difference]: Start difference. First operand 233 states and 263 transitions. Second operand has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:53:24,346 INFO L93 Difference]: Finished difference Result 265 states and 296 transitions. [2022-12-14 14:53:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 14:53:24,346 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-14 14:53:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:53:24,347 INFO L225 Difference]: With dead ends: 265 [2022-12-14 14:53:24,347 INFO L226 Difference]: Without dead ends: 265 [2022-12-14 14:53:24,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=591, Invalid=4959, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 14:53:24,348 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 923 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:53:24,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2410 Invalid, 3423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 14:53:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-12-14 14:53:24,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 232. [2022-12-14 14:53:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 162 states have (on average 1.617283950617284) internal successors, (262), 231 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 262 transitions. [2022-12-14 14:53:24,350 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 262 transitions. Word has length 33 [2022-12-14 14:53:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:24,350 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 262 transitions. [2022-12-14 14:53:24,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 262 transitions. [2022-12-14 14:53:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:53:24,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:24,351 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:24,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:53:24,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:53:24,552 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:53:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:24,553 INFO L85 PathProgramCache]: Analyzing trace with hash 373171141, now seen corresponding path program 1 times [2022-12-14 14:53:24,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:24,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363203906] [2022-12-14 14:53:24,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:24,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:53:25,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:53:25,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363203906] [2022-12-14 14:53:25,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363203906] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:53:25,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646057951] [2022-12-14 14:53:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:25,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:53:25,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:53:25,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:53:25,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:53:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:25,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-14 14:53:25,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:53:25,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:53:25,761 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:25,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:53:25,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 14:53:25,789 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:53:25,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 14:53:25,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 14:53:25,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:25,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:25,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:25,921 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 22 treesize of output 24 [2022-12-14 14:53:25,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:25,961 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 44 treesize of output 35 [2022-12-14 14:53:25,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:25,968 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 46 treesize of output 37 [2022-12-14 14:53:26,048 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 14:53:26,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 59 [2022-12-14 14:53:26,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:26,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2022-12-14 14:53:26,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:26,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2022-12-14 14:53:26,138 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 14:53:26,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 59 [2022-12-14 14:53:26,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:26,275 INFO L321 Elim1Store]: treesize reduction 103, result has 14.2 percent of original size [2022-12-14 14:53:26,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 80 [2022-12-14 14:53:26,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:26,280 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:53:26,280 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 1 case distinctions, treesize of input 103 treesize of output 80 [2022-12-14 14:53:26,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:26,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2022-12-14 14:53:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:26,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-12-14 14:53:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:53:26,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:53:31,929 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~data~0#1.offset| 4))) (and (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_72| Int)) (or (not (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#iter~0#1.base_72|)) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_1289 Int)) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_72|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.offset|) (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) v_ArrVal_1289)) |c_ULTIMATE.start_main_~data~0#1.base|) .cse0))))) (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_72| Int)) (or (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_1289 Int) (v_ArrVal_1280 Int) (v_ArrVal_1290 Int)) (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_72|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.offset|) .cse1 v_ArrVal_1289)) |c_ULTIMATE.start_main_~data~0#1.base|) .cse0) 4) (select (store |c_#length| |v_ULTIMATE.start_main_~#iter~0#1.base_72| v_ArrVal_1280) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_72|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.base|) .cse1 v_ArrVal_1290)) |c_ULTIMATE.start_main_~data~0#1.base|) .cse0))))) (not (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#iter~0#1.base_72|)))))) is different from false [2022-12-14 14:53:32,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:32,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:38,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1998 treesize of output 1964 [2022-12-14 14:53:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 14:53:39,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646057951] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:53:39,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [578866316] [2022-12-14 14:53:39,901 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 14:53:39,901 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:53:39,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:53:39,901 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:53:39,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:53:39,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:53:39,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 14:53:39,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:39,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,961 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 [2022-12-14 14:53:39,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,973 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 [2022-12-14 14:53:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 14:53:39,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:39,994 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 [2022-12-14 14:53:40,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:53:40,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-14 14:53:40,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:53:40,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:53:40,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:53:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-12-14 14:53:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2022-12-14 14:53:40,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,165 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-12-14 14:53:40,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 180 treesize of output 144 [2022-12-14 14:53:40,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2022-12-14 14:53:40,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 99 [2022-12-14 14:53:40,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,245 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-12-14 14:53:40,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 164 [2022-12-14 14:53:40,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-12-14 14:53:40,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 102 [2022-12-14 14:53:40,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 60 [2022-12-14 14:53:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,381 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-12-14 14:53:40,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 173 treesize of output 140 [2022-12-14 14:53:40,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-12-14 14:53:40,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-12-14 14:53:40,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,539 INFO L321 Elim1Store]: treesize reduction 80, result has 27.3 percent of original size [2022-12-14 14:53:40,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 487 treesize of output 451 [2022-12-14 14:53:40,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,564 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-12-14 14:53:40,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 617 treesize of output 576 [2022-12-14 14:53:40,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:40,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:40,617 INFO L321 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2022-12-14 14:53:40,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 611 treesize of output 626 [2022-12-14 14:53:40,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:41,021 INFO L321 Elim1Store]: treesize reduction 338, result has 16.7 percent of original size [2022-12-14 14:53:41,022 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 1434 treesize of output 1415 [2022-12-14 14:53:41,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:41,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:41,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:41,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:41,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:41,602 INFO L321 Elim1Store]: treesize reduction 126, result has 25.4 percent of original size [2022-12-14 14:53:41,603 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 9 new quantified variables, introduced 18 case distinctions, treesize of input 3268 treesize of output 1791 [2022-12-14 14:53:41,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:41,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:41,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:41,744 INFO L321 Elim1Store]: treesize reduction 346, result has 14.4 percent of original size [2022-12-14 14:53:41,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 19 case distinctions, treesize of input 3289 treesize of output 2720 [2022-12-14 14:53:41,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:41,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:41,798 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-12-14 14:53:41,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3194 treesize of output 2871 [2022-12-14 14:53:42,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:42,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,479 INFO L321 Elim1Store]: treesize reduction 134, result has 13.5 percent of original size [2022-12-14 14:53:42,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 3252 treesize of output 1783 [2022-12-14 14:53:42,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:42,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:42,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:42,700 INFO L321 Elim1Store]: treesize reduction 376, result has 8.3 percent of original size [2022-12-14 14:53:42,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 3270 treesize of output 2709 [2022-12-14 14:53:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:43,002 INFO L321 Elim1Store]: treesize reduction 458, result has 14.4 percent of original size [2022-12-14 14:53:43,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 3253 treesize of output 3163 [2022-12-14 14:53:43,199 INFO L321 Elim1Store]: treesize reduction 152, result has 29.0 percent of original size [2022-12-14 14:53:43,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 3203 treesize of output 2915 [2022-12-14 14:53:44,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:44,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:44,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:44,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,361 INFO L321 Elim1Store]: treesize reduction 126, result has 14.3 percent of original size [2022-12-14 14:53:44,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 6585 treesize of output 3569 [2022-12-14 14:53:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:44,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:44,544 INFO L321 Elim1Store]: treesize reduction 364, result has 8.5 percent of original size [2022-12-14 14:53:44,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 6603 treesize of output 5473 [2022-12-14 14:53:44,753 INFO L321 Elim1Store]: treesize reduction 228, result has 23.2 percent of original size [2022-12-14 14:53:44,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 6596 treesize of output 6128 [2022-12-14 14:53:45,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:45,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:45,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:45,660 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:45,660 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 [2022-12-14 14:53:45,665 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 [2022-12-14 14:53:45,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:45,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 14:53:45,687 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 19 treesize of output 1 [2022-12-14 14:53:45,715 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 14:53:45,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-12-14 14:53:45,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 14:53:45,728 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 [2022-12-14 14:53:45,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-14 14:53:45,762 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 14:53:45,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 14:53:45,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-12-14 14:53:45,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:53:45,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:53:45,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:45,804 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 19 treesize of output 1 [2022-12-14 14:53:45,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:45,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 14:53:45,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:53:45,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:45,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:53:45,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:45,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:45,896 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:53:45,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:53:45,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:45,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:45,915 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:53:45,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:53:45,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:45,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:45,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:46,006 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:53:46,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-12-14 14:53:46,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:46,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:53:46,042 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:53:46,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 66 [2022-12-14 14:53:46,096 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:53:46,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:53:46,122 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:53:46,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:53:46,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:53:46,260 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-12-14 14:53:46,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-12-14 14:53:46,335 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:46,335 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 [2022-12-14 14:53:46,368 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:46,368 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 [2022-12-14 14:53:46,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:46,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:53:46,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:53:46,464 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:53:46,464 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 [2022-12-14 14:53:46,467 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 [2022-12-14 14:53:46,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:53:46,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:46,475 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 [2022-12-14 14:53:46,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:53:46,479 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 [2022-12-14 14:53:46,480 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:53:50,401 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18255#(and (= (select |#valid| |ULTIMATE.start_main_~#iter~0#1.base|) 1) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_#t~mem13#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (or (not (<= 0 |ULTIMATE.start_main_#t~mem13#1.offset|)) (not (<= (+ |ULTIMATE.start_main_#t~mem13#1.offset| 4) (select |#length| |ULTIMATE.start_main_#t~mem13#1.base|)))) (or (and (<= 0 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_18| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) 1) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4)) |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 8) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_18|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))))) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_17| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_18| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_17|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_18|)))) (not (= |ULTIMATE.start_main_~#iter~0#1.offset| (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4))))) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_17| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_18| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) 1) (not (= |ULTIMATE.start_main_~#iter~0#1.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_17|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_18|))))))) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#iter~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0))) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2022-12-14 14:53:50,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:53:50,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:53:50,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 13] total 40 [2022-12-14 14:53:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156843795] [2022-12-14 14:53:50,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:53:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 14:53:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 14:53:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3550, Unknown=1, NotChecked=120, Total=3906 [2022-12-14 14:53:50,403 INFO L87 Difference]: Start difference. First operand 232 states and 262 transitions. Second operand has 41 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:53:58,636 INFO L93 Difference]: Finished difference Result 328 states and 372 transitions. [2022-12-14 14:53:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 14:53:58,636 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-14 14:53:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:53:58,637 INFO L225 Difference]: With dead ends: 328 [2022-12-14 14:53:58,637 INFO L226 Difference]: Without dead ends: 328 [2022-12-14 14:53:58,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=615, Invalid=5394, Unknown=1, NotChecked=152, Total=6162 [2022-12-14 14:53:58,638 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1067 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 4358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:53:58,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 2397 Invalid, 4358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3974 Invalid, 0 Unknown, 316 Unchecked, 5.9s Time] [2022-12-14 14:53:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-12-14 14:53:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 231. [2022-12-14 14:53:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 162 states have (on average 1.6111111111111112) internal successors, (261), 230 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-12-14 14:53:58,640 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 33 [2022-12-14 14:53:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:58,640 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-12-14 14:53:58,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-12-14 14:53:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:53:58,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:58,641 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:58,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:53:58,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:53:58,842 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:53:58,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:58,843 INFO L85 PathProgramCache]: Analyzing trace with hash 671181745, now seen corresponding path program 1 times [2022-12-14 14:53:58,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:58,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988701773] [2022-12-14 14:53:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:58,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:53:59,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:53:59,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988701773] [2022-12-14 14:53:59,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988701773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:53:59,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:53:59,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 14:53:59,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357767578] [2022-12-14 14:53:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:53:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 14:53:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 14:53:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:53:59,054 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:53:59,488 INFO L93 Difference]: Finished difference Result 356 states and 407 transitions. [2022-12-14 14:53:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:53:59,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-12-14 14:53:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:53:59,489 INFO L225 Difference]: With dead ends: 356 [2022-12-14 14:53:59,489 INFO L226 Difference]: Without dead ends: 356 [2022-12-14 14:53:59,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-12-14 14:53:59,490 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 950 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:53:59,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 559 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:53:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-12-14 14:53:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 284. [2022-12-14 14:53:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 215 states have (on average 1.613953488372093) internal successors, (347), 283 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 347 transitions. [2022-12-14 14:53:59,493 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 347 transitions. Word has length 33 [2022-12-14 14:53:59,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:59,493 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 347 transitions. [2022-12-14 14:53:59,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:59,493 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 347 transitions. [2022-12-14 14:53:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 14:53:59,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:59,493 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 14:53:59,493 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:53:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash 944318581, now seen corresponding path program 1 times [2022-12-14 14:53:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309094942] [2022-12-14 14:53:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:53:59,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:53:59,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309094942] [2022-12-14 14:53:59,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309094942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:53:59,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:53:59,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 14:53:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840454058] [2022-12-14 14:53:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:53:59,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:53:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:59,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:53:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:53:59,571 INFO L87 Difference]: Start difference. First operand 284 states and 347 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:53:59,834 INFO L93 Difference]: Finished difference Result 386 states and 435 transitions. [2022-12-14 14:53:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:53:59,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-12-14 14:53:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:53:59,836 INFO L225 Difference]: With dead ends: 386 [2022-12-14 14:53:59,837 INFO L226 Difference]: Without dead ends: 386 [2022-12-14 14:53:59,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-12-14 14:53:59,837 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1163 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:53:59,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 654 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:53:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-12-14 14:53:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2022-12-14 14:53:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 214 states have (on average 1.602803738317757) internal successors, (343), 282 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 343 transitions. [2022-12-14 14:53:59,841 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 343 transitions. Word has length 37 [2022-12-14 14:53:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:59,841 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 343 transitions. [2022-12-14 14:53:59,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:53:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 343 transitions. [2022-12-14 14:53:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 14:53:59,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:59,841 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:59,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 14:53:59,841 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:53:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1458941221, now seen corresponding path program 1 times [2022-12-14 14:53:59,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:59,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414202093] [2022-12-14 14:53:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:59,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:54:00,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:54:00,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414202093] [2022-12-14 14:54:00,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414202093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:54:00,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:54:00,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:54:00,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250833854] [2022-12-14 14:54:00,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:54:00,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:54:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:54:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:54:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:54:00,123 INFO L87 Difference]: Start difference. First operand 283 states and 343 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:54:00,709 INFO L93 Difference]: Finished difference Result 384 states and 431 transitions. [2022-12-14 14:54:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 14:54:00,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-12-14 14:54:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:54:00,711 INFO L225 Difference]: With dead ends: 384 [2022-12-14 14:54:00,711 INFO L226 Difference]: Without dead ends: 384 [2022-12-14 14:54:00,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-12-14 14:54:00,712 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 869 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:54:00,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 305 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:54:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-12-14 14:54:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2022-12-14 14:54:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 235 states have (on average 1.6680851063829787) internal successors, (392), 303 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 392 transitions. [2022-12-14 14:54:00,716 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 392 transitions. Word has length 38 [2022-12-14 14:54:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:54:00,716 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 392 transitions. [2022-12-14 14:54:00,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 392 transitions. [2022-12-14 14:54:00,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 14:54:00,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:00,717 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:54:00,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 14:54:00,717 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:54:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:00,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382676, now seen corresponding path program 1 times [2022-12-14 14:54:00,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:54:00,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837646214] [2022-12-14 14:54:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:00,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:54:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:54:00,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:54:00,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837646214] [2022-12-14 14:54:00,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837646214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:54:00,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:54:00,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:54:00,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896890669] [2022-12-14 14:54:00,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:54:00,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:54:00,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:54:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:54:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:54:00,785 INFO L87 Difference]: Start difference. First operand 304 states and 392 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:54:01,014 INFO L93 Difference]: Finished difference Result 398 states and 499 transitions. [2022-12-14 14:54:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:54:01,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 38 [2022-12-14 14:54:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:54:01,016 INFO L225 Difference]: With dead ends: 398 [2022-12-14 14:54:01,016 INFO L226 Difference]: Without dead ends: 398 [2022-12-14 14:54:01,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:54:01,016 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 209 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:54:01,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 384 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:54:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-12-14 14:54:01,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 308. [2022-12-14 14:54:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 239 states have (on average 1.6610878661087867) internal successors, (397), 307 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 397 transitions. [2022-12-14 14:54:01,020 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 397 transitions. Word has length 38 [2022-12-14 14:54:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:54:01,020 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 397 transitions. [2022-12-14 14:54:01,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 397 transitions. [2022-12-14 14:54:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 14:54:01,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:01,020 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:54:01,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 14:54:01,021 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:54:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382675, now seen corresponding path program 1 times [2022-12-14 14:54:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:54:01,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973089322] [2022-12-14 14:54:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:54:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:54:01,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:54:01,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973089322] [2022-12-14 14:54:01,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973089322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:54:01,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:54:01,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 14:54:01,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738002676] [2022-12-14 14:54:01,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:54:01,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 14:54:01,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:54:01,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 14:54:01,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:54:01,332 INFO L87 Difference]: Start difference. First operand 308 states and 397 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:02,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:54:02,042 INFO L93 Difference]: Finished difference Result 402 states and 455 transitions. [2022-12-14 14:54:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 14:54:02,043 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-12-14 14:54:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:54:02,044 INFO L225 Difference]: With dead ends: 402 [2022-12-14 14:54:02,044 INFO L226 Difference]: Without dead ends: 402 [2022-12-14 14:54:02,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2022-12-14 14:54:02,044 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 1099 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:54:02,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 591 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:54:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-12-14 14:54:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2022-12-14 14:54:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 239 states have (on average 1.6569037656903767) internal successors, (396), 307 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 396 transitions. [2022-12-14 14:54:02,048 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 396 transitions. Word has length 38 [2022-12-14 14:54:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:54:02,048 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 396 transitions. [2022-12-14 14:54:02,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 396 transitions. [2022-12-14 14:54:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 14:54:02,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:02,048 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:54:02,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-14 14:54:02,049 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:54:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2017471956, now seen corresponding path program 1 times [2022-12-14 14:54:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:54:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522613627] [2022-12-14 14:54:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:54:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:54:02,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:54:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522613627] [2022-12-14 14:54:02,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522613627] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:54:02,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396692350] [2022-12-14 14:54:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:02,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:54:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:54:02,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:54:02,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:54:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:02,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 14:54:02,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:54:02,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:02,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:02,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,814 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 18 [2022-12-14 14:54:02,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 14:54:02,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 14:54:02,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:54:02,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:54:02,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 14:54:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 14:54:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:02,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-14 14:54:02,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:54:03,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:54:03,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:54:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:54:03,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:54:03,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:54:03,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 14:54:03,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-12-14 14:54:03,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:54:03,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:54:03,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 14:54:03,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:03,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-12-14 14:54:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:54:03,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396692350] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:54:03,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1747423517] [2022-12-14 14:54:03,431 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-12-14 14:54:03,431 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:54:03,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:54:03,431 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:54:03,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:54:03,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:54:03,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:03,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 14:54:03,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-14 14:54:03,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,513 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 [2022-12-14 14:54:03,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 14:54:03,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,534 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 [2022-12-14 14:54:03,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-14 14:54:03,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:54:03,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:54:03,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:54:03,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 14:54:03,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-12-14 14:54:03,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 47 [2022-12-14 14:54:03,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:03,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:03,711 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 14:54:03,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 113 [2022-12-14 14:54:03,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2022-12-14 14:54:03,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 14:54:03,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:03,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:03,793 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-12-14 14:54:03,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 133 [2022-12-14 14:54:03,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2022-12-14 14:54:03,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 60 [2022-12-14 14:54:03,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-12-14 14:54:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:03,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:03,888 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-12-14 14:54:03,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 173 treesize of output 140 [2022-12-14 14:54:03,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-12-14 14:54:03,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:03,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-12-14 14:54:04,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:04,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:04,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,050 INFO L321 Elim1Store]: treesize reduction 80, result has 27.3 percent of original size [2022-12-14 14:54:04,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 494 treesize of output 458 [2022-12-14 14:54:04,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:04,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:04,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,070 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-12-14 14:54:04,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 624 treesize of output 583 [2022-12-14 14:54:04,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:04,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:04,127 INFO L321 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2022-12-14 14:54:04,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 618 treesize of output 633 [2022-12-14 14:54:04,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:04,560 INFO L321 Elim1Store]: treesize reduction 338, result has 16.7 percent of original size [2022-12-14 14:54:04,560 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 1448 treesize of output 1425 [2022-12-14 14:54:05,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:05,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:05,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:05,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:05,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:05,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:05,149 INFO L321 Elim1Store]: treesize reduction 220, result has 18.2 percent of original size [2022-12-14 14:54:05,150 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 9 new quantified variables, introduced 18 case distinctions, treesize of input 2657 treesize of output 1518 [2022-12-14 14:54:05,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:05,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:05,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:05,278 INFO L321 Elim1Store]: treesize reduction 384, result has 13.1 percent of original size [2022-12-14 14:54:05,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 2698 treesize of output 2164 [2022-12-14 14:54:05,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:05,344 INFO L321 Elim1Store]: treesize reduction 159, result has 8.6 percent of original size [2022-12-14 14:54:05,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2623 treesize of output 2344 [2022-12-14 14:54:06,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:06,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:06,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,168 INFO L321 Elim1Store]: treesize reduction 260, result has 11.6 percent of original size [2022-12-14 14:54:06,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 4976 treesize of output 2745 [2022-12-14 14:54:06,289 INFO L321 Elim1Store]: treesize reduction 208, result has 24.1 percent of original size [2022-12-14 14:54:06,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 4963 treesize of output 4439 [2022-12-14 14:54:06,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:06,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:06,440 INFO L321 Elim1Store]: treesize reduction 448, result has 9.1 percent of original size [2022-12-14 14:54:06,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 4797 treesize of output 3793 [2022-12-14 14:54:06,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:06,669 INFO L321 Elim1Store]: treesize reduction 458, result has 14.4 percent of original size [2022-12-14 14:54:06,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 4737 treesize of output 4511 [2022-12-14 14:54:09,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:09,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:09,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:09,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:09,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:09,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:09,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:09,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:09,826 INFO L321 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2022-12-14 14:54:09,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 15303 treesize of output 8395 [2022-12-14 14:54:09,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:09,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:09,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:09,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:09,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:10,092 INFO L321 Elim1Store]: treesize reduction 432, result has 9.4 percent of original size [2022-12-14 14:54:10,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 15321 treesize of output 12066 [2022-12-14 14:54:10,349 INFO L321 Elim1Store]: treesize reduction 292, result has 20.0 percent of original size [2022-12-14 14:54:10,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 15314 treesize of output 13906 [2022-12-14 14:54:12,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:54:12,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:12,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:12,601 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:54:12,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 14:54:12,619 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:54:12,619 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 [2022-12-14 14:54:12,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 14:54:12,637 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 19 treesize of output 1 [2022-12-14 14:54:12,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:12,655 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 [2022-12-14 14:54:12,675 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 14:54:12,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2022-12-14 14:54:12,704 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 14:54:12,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 14:54:12,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-12-14 14:54:12,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-12-14 14:54:12,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:54:12,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:54:12,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-12-14 14:54:12,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:12,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:54:12,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:12,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 14:54:12,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:54:12,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:54:12,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:54:12,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:54:12,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:54:12,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:12,841 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:54:12,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:54:12,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:12,853 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:54:12,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-14 14:54:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:12,924 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:54:12,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-12-14 14:54:12,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:12,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:12,956 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-12-14 14:54:12,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-12-14 14:54:12,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:54:12,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:54:13,014 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:54:13,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:54:13,036 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-12-14 14:54:13,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-12-14 14:54:13,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:54:13,397 INFO L321 Elim1Store]: treesize reduction 107, result has 22.5 percent of original size [2022-12-14 14:54:13,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 34 treesize of output 52 [2022-12-14 14:54:13,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:54:13,451 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:54:13,451 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 [2022-12-14 14:54:13,460 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 [2022-12-14 14:54:13,520 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-12-14 14:54:13,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-12-14 14:54:13,622 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:54:13,623 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 [2022-12-14 14:54:13,646 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:54:13,646 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 [2022-12-14 14:54:13,667 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 14:54:13,668 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 1 [2022-12-14 14:54:13,747 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 13 treesize of output 9 [2022-12-14 14:54:13,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:54:13,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:13,767 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:54:13,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 14:54:13,782 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:54:13,782 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 [2022-12-14 14:54:13,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:13,787 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 [2022-12-14 14:54:13,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:54:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:13,797 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 [2022-12-14 14:54:13,799 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:54:17,706 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22673#(and (<= 0 |ULTIMATE.start_main_~#dst~1#1.offset|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~#dst~1#1.offset| 0) (<= |ULTIMATE.start_main_~#sub1~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#sub2~0#1.base|) 1) (<= 0 |ULTIMATE.start_main_~dst~0#1.offset|) (<= (+ |ULTIMATE.start_main_~list~1#1.offset| 4) (select |#length| |ULTIMATE.start_main_~list~1#1.base|)) (not (= |ULTIMATE.start_main_~#sub2~0#1.base| |ULTIMATE.start_main_~list~1#1.base|)) (not (= (select |#valid| |ULTIMATE.start_main_~next~0#1.base|) 1)) (<= 0 |ULTIMATE.start_main_~node~1#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~list~1#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~list~1#1.base|) 1) (<= 0 |ULTIMATE.start_main_~node~1#1.base|) (<= 0 |ULTIMATE.start_main_~#sub1~0#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#sub2~0#1.base|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#sub1~0#1.base|) |ULTIMATE.start_main_~#sub1~0#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~list~1#1.base|) |ULTIMATE.start_main_~list~1#1.offset|)) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~dst~0#1.base|) (= 4 (select |#length| |ULTIMATE.start_main_~#sub2~0#1.base|)) (= |ULTIMATE.start_main_~#sub2~0#1.offset| 0) (<= 0 |#NULL.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#sub1~0#1.base|) |ULTIMATE.start_main_~#sub1~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~list~1#1.base|) |ULTIMATE.start_main_~list~1#1.offset|)) (<= |ULTIMATE.start_main_~dst~0#1.base| 0) (<= |ULTIMATE.start_main_~node~1#1.base| 0) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~list~1#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sub1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#dst~1#1.base|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)) (<= |ULTIMATE.start_main_~dst~0#1.offset| 0) (<= |ULTIMATE.start_main_~node~1#1.offset| 0))' at error location [2022-12-14 14:54:17,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:54:17,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:54:17,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 24 [2022-12-14 14:54:17,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679152609] [2022-12-14 14:54:17,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:54:17,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:54:17,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:54:17,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:54:17,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2947, Unknown=2, NotChecked=0, Total=3192 [2022-12-14 14:54:17,708 INFO L87 Difference]: Start difference. First operand 308 states and 396 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:54:18,515 INFO L93 Difference]: Finished difference Result 321 states and 409 transitions. [2022-12-14 14:54:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 14:54:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-12-14 14:54:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:54:18,516 INFO L225 Difference]: With dead ends: 321 [2022-12-14 14:54:18,516 INFO L226 Difference]: Without dead ends: 321 [2022-12-14 14:54:18,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=325, Invalid=3705, Unknown=2, NotChecked=0, Total=4032 [2022-12-14 14:54:18,517 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 93 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:54:18,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1648 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 14:54:18,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-12-14 14:54:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2022-12-14 14:54:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 248 states have (on average 1.6330645161290323) internal successors, (405), 316 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 405 transitions. [2022-12-14 14:54:18,520 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 405 transitions. Word has length 39 [2022-12-14 14:54:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:54:18,520 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 405 transitions. [2022-12-14 14:54:18,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:18,520 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 405 transitions. [2022-12-14 14:54:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 14:54:18,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:18,521 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:54:18,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 14:54:18,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-14 14:54:18,722 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-12-14 14:54:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2024368557, now seen corresponding path program 1 times [2022-12-14 14:54:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:54:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144360981] [2022-12-14 14:54:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:18,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:54:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:54:20,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:54:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144360981] [2022-12-14 14:54:20,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144360981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:54:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308699461] [2022-12-14 14:54:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:20,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:54:20,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:54:20,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:54:20,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae929eec-458f-4fcb-a659-9f62eae70953/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:54:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:20,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 118 conjunts are in the unsatisfiable core [2022-12-14 14:54:20,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:54:20,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:54:20,583 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:54:20,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:54:20,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:54:20,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:20,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-12-14 14:54:20,721 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 14:54:20,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 14:54:20,760 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 32 treesize of output 30 [2022-12-14 14:54:20,773 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 32 treesize of output 30 [2022-12-14 14:54:20,801 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 14:54:20,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 14:54:20,864 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 45 treesize of output 32 [2022-12-14 14:54:20,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:20,927 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:54:20,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2022-12-14 14:54:20,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:54:21,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:21,047 INFO L321 Elim1Store]: treesize reduction 90, result has 36.6 percent of original size [2022-12-14 14:54:21,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 69 [2022-12-14 14:54:21,123 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 18 [2022-12-14 14:54:21,132 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 14:54:21,132 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 110 treesize of output 66 [2022-12-14 14:54:21,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:21,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 14:54:21,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:21,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:21,386 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-12-14 14:54:21,386 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 6 new quantified variables, introduced 7 case distinctions, treesize of input 184 treesize of output 90 [2022-12-14 14:54:21,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:21,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:21,792 INFO L321 Elim1Store]: treesize reduction 44, result has 21.4 percent of original size [2022-12-14 14:54:21,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 192 treesize of output 98 [2022-12-14 14:54:21,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:21,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 14:54:22,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:22,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:22,182 INFO L321 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2022-12-14 14:54:22,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 226 treesize of output 120 [2022-12-14 14:54:22,190 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:54:22,190 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 1 case distinctions, treesize of input 53 treesize of output 46 [2022-12-14 14:54:22,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:22,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-12-14 14:54:22,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:54:22,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:54:22,612 INFO L321 Elim1Store]: treesize reduction 65, result has 9.7 percent of original size [2022-12-14 14:54:22,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 89 [2022-12-14 14:54:22,864 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-12-14 14:54:22,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 133 treesize of output 60 [2022-12-14 14:54:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:54:22,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:56:07,353 WARN L233 SmtUtils]: Spent 51.96s on a formula simplification. DAG size of input: 112 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:56:42,710 WARN L233 SmtUtils]: Spent 14.22s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:56:46,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:56:46,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 550 treesize of output 308 [2022-12-14 14:56:46,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:56:46,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:56:46,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:56:46,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 7562 treesize of output 7360 [2022-12-14 14:56:46,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33686 treesize of output 33278 [2022-12-14 14:56:48,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17334 treesize of output 17270