./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-38b53e6 [2022-11-25 22:16:17,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:16:17,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:16:17,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:16:17,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:16:17,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:16:17,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:16:17,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:16:17,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:16:17,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:16:17,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:16:17,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:16:17,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:16:17,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:16:17,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:16:17,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:16:17,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:16:17,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:16:17,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:16:17,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:16:17,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:16:17,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:16:17,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:16:17,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:16:17,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:16:17,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:16:17,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:16:17,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:16:17,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:16:17,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:16:17,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:16:17,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:16:17,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:16:17,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:16:17,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:16:17,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:16:17,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:16:17,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:16:17,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:16:17,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:16:17,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:16:17,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-25 22:16:17,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:16:17,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:16:17,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:16:17,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:16:17,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:16:17,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:16:17,849 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:16:17,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:16:17,850 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:16:17,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:16:17,851 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:16:17,852 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:16:17,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:16:17,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:16:17,852 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:16:17,853 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:16:17,853 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:16:17,853 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:16:17,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 22:16:17,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 22:16:17,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:16:17,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:16:17,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:16:17,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:16:17,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:16:17,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:16:17,857 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 22:16:17,857 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 22:16:17,857 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 22:16:17,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:16:17,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:16:17,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:16:17,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:16:17,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:16:17,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:16:17,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:16:17,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:16:17,860 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:16:17,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:16:17,860 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:16:17,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:16:17,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:16:17,861 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_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2022-11-25 22:16:18,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:16:18,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:16:18,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:16:18,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:16:18,232 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:16:18,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/memsafety/test-0521.i [2022-11-25 22:16:21,518 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:16:21,761 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:16:21,761 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/sv-benchmarks/c/memsafety/test-0521.i [2022-11-25 22:16:21,774 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/data/ac324f3cb/18fe86e74cb247638dcf9177ec7b203d/FLAGfe34bce4d [2022-11-25 22:16:21,802 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/data/ac324f3cb/18fe86e74cb247638dcf9177ec7b203d [2022-11-25 22:16:21,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:16:21,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:16:21,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:16:21,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:16:21,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:16:21,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:16:21" (1/1) ... [2022-11-25 22:16:21,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2359c590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:21, skipping insertion in model container [2022-11-25 22:16:21,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:16:21" (1/1) ... [2022-11-25 22:16:21,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:16:21,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:16:22,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:16:22,209 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:16:22,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:16:22,342 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:16:22,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22 WrapperNode [2022-11-25 22:16:22,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:16:22,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:16:22,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:16:22,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:16:22,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,430 INFO L138 Inliner]: procedures = 125, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 305 [2022-11-25 22:16:22,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:16:22,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:16:22,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:16:22,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:16:22,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:16:22,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:16:22,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:16:22,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:16:22,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (1/1) ... [2022-11-25 22:16:22,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:16:22,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:22,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:16:22,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:16:22,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:16:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:16:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:16:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:16:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:16:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:16:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:16:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:16:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:16:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:16:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:16:22,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:16:22,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:16:23,699 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:16:23,789 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:16:23,790 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-25 22:16:23,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:16:23 BoogieIcfgContainer [2022-11-25 22:16:23,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:16:23,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:16:23,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:16:23,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:16:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:16:21" (1/3) ... [2022-11-25 22:16:23,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5294017f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:16:23, skipping insertion in model container [2022-11-25 22:16:23,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:16:22" (2/3) ... [2022-11-25 22:16:23,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5294017f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:16:23, skipping insertion in model container [2022-11-25 22:16:23,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:16:23" (3/3) ... [2022-11-25 22:16:23,802 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0521.i [2022-11-25 22:16:23,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:16:23,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2022-11-25 22:16:23,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:16:23,882 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;@7c9d8fb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:16:23,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2022-11-25 22:16:23,887 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) [2022-11-25 22:16:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:16:23,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:23,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:16:23,894 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)] === [2022-11-25 22:16:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash 16140635, now seen corresponding path program 1 times [2022-11-25 22:16:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:23,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197962580] [2022-11-25 22:16:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:24,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197962580] [2022-11-25 22:16:24,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197962580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:24,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:24,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166272563] [2022-11-25 22:16:24,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:24,163 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) [2022-11-25 22:16:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:24,628 INFO L93 Difference]: Finished difference Result 355 states and 389 transitions. [2022-11-25 22:16:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:24,632 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 [2022-11-25 22:16:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:24,654 INFO L225 Difference]: With dead ends: 355 [2022-11-25 22:16:24,655 INFO L226 Difference]: Without dead ends: 354 [2022-11-25 22:16:24,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:24,661 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 98 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:24,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 429 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-25 22:16:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 271. [2022-11-25 22:16:24,731 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) [2022-11-25 22:16:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 296 transitions. [2022-11-25 22:16:24,733 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 296 transitions. Word has length 4 [2022-11-25 22:16:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:24,734 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 296 transitions. [2022-11-25 22:16:24,734 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) [2022-11-25 22:16:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 296 transitions. [2022-11-25 22:16:24,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:16:24,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:24,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:16:24,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:16:24,735 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)] === [2022-11-25 22:16:24,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash 16140636, now seen corresponding path program 1 times [2022-11-25 22:16:24,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:24,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869235051] [2022-11-25 22:16:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:24,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:24,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869235051] [2022-11-25 22:16:24,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869235051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:24,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:24,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046506602] [2022-11-25 22:16:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:24,850 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) [2022-11-25 22:16:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:25,306 INFO L93 Difference]: Finished difference Result 473 states and 520 transitions. [2022-11-25 22:16:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:25,306 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 [2022-11-25 22:16:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:25,308 INFO L225 Difference]: With dead ends: 473 [2022-11-25 22:16:25,309 INFO L226 Difference]: Without dead ends: 473 [2022-11-25 22:16:25,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:25,310 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 229 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:25,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 507 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:16:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-25 22:16:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 269. [2022-11-25 22:16:25,319 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) [2022-11-25 22:16:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 294 transitions. [2022-11-25 22:16:25,321 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 294 transitions. Word has length 4 [2022-11-25 22:16:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:25,321 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 294 transitions. [2022-11-25 22:16:25,321 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) [2022-11-25 22:16:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 294 transitions. [2022-11-25 22:16:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:16:25,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:25,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 22:16:25,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:16:25,323 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)] === [2022-11-25 22:16:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash 499844386, now seen corresponding path program 1 times [2022-11-25 22:16:25,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:25,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601224426] [2022-11-25 22:16:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:25,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:25,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601224426] [2022-11-25 22:16:25,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601224426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:25,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:25,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:25,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076235041] [2022-11-25 22:16:25,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:25,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:25,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:25,392 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) [2022-11-25 22:16:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:25,621 INFO L93 Difference]: Finished difference Result 253 states and 278 transitions. [2022-11-25 22:16:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:25,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 22:16:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:25,624 INFO L225 Difference]: With dead ends: 253 [2022-11-25 22:16:25,624 INFO L226 Difference]: Without dead ends: 253 [2022-11-25 22:16:25,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:25,626 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 71 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 293 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-25 22:16:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-11-25 22:16:25,632 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) [2022-11-25 22:16:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 278 transitions. [2022-11-25 22:16:25,633 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 278 transitions. Word has length 5 [2022-11-25 22:16:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:25,633 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 278 transitions. [2022-11-25 22:16:25,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:16:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 278 transitions. [2022-11-25 22:16:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:16:25,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:25,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 22:16:25,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:16:25,635 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)] === [2022-11-25 22:16:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash 499844387, now seen corresponding path program 1 times [2022-11-25 22:16:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:25,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114989385] [2022-11-25 22:16:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:25,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:25,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:25,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114989385] [2022-11-25 22:16:25,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114989385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:25,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:25,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:25,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646228250] [2022-11-25 22:16:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:25,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:25,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:25,742 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) [2022-11-25 22:16:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:25,966 INFO L93 Difference]: Finished difference Result 237 states and 262 transitions. [2022-11-25 22:16:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 22:16:25,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:25,967 INFO L225 Difference]: With dead ends: 237 [2022-11-25 22:16:25,968 INFO L226 Difference]: Without dead ends: 237 [2022-11-25 22:16:25,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:25,969 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 55 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-25 22:16:25,970 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] [2022-11-25 22:16:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-25 22:16:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-25 22:16:25,974 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) [2022-11-25 22:16:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 262 transitions. [2022-11-25 22:16:25,976 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 262 transitions. Word has length 5 [2022-11-25 22:16:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:25,976 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 262 transitions. [2022-11-25 22:16:25,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:16:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 262 transitions. [2022-11-25 22:16:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:16:25,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:25,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 22:16:25,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:16:25,978 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)] === [2022-11-25 22:16:25,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216808, now seen corresponding path program 1 times [2022-11-25 22:16:25,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:25,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770840098] [2022-11-25 22:16:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:25,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:26,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770840098] [2022-11-25 22:16:26,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770840098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:26,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:26,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321157318] [2022-11-25 22:16:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:26,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:26,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:26,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:26,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:26,032 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) [2022-11-25 22:16:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:26,303 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2022-11-25 22:16:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:26,304 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 [2022-11-25 22:16:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:26,305 INFO L225 Difference]: With dead ends: 288 [2022-11-25 22:16:26,305 INFO L226 Difference]: Without dead ends: 288 [2022-11-25 22:16:26,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:26,306 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:26,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 363 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-25 22:16:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 235. [2022-11-25 22:16:26,311 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) [2022-11-25 22:16:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 260 transitions. [2022-11-25 22:16:26,312 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 260 transitions. Word has length 6 [2022-11-25 22:16:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:26,312 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 260 transitions. [2022-11-25 22:16:26,312 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) [2022-11-25 22:16:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 260 transitions. [2022-11-25 22:16:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:16:26,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:26,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 22:16:26,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:16:26,314 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)] === [2022-11-25 22:16:26,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216807, now seen corresponding path program 1 times [2022-11-25 22:16:26,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:26,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756738146] [2022-11-25 22:16:26,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:26,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:26,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:26,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756738146] [2022-11-25 22:16:26,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756738146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:26,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:26,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052431349] [2022-11-25 22:16:26,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:26,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:26,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:26,431 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) [2022-11-25 22:16:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:26,775 INFO L93 Difference]: Finished difference Result 407 states and 454 transitions. [2022-11-25 22:16:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:26,776 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 [2022-11-25 22:16:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:26,779 INFO L225 Difference]: With dead ends: 407 [2022-11-25 22:16:26,779 INFO L226 Difference]: Without dead ends: 407 [2022-11-25 22:16:26,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:26,780 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 193 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:26,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 441 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:26,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-25 22:16:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 233. [2022-11-25 22:16:26,789 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) [2022-11-25 22:16:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 258 transitions. [2022-11-25 22:16:26,790 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 258 transitions. Word has length 6 [2022-11-25 22:16:26,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:26,791 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 258 transitions. [2022-11-25 22:16:26,791 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) [2022-11-25 22:16:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 258 transitions. [2022-11-25 22:16:26,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 22:16:26,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:26,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:26,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:16:26,792 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)] === [2022-11-25 22:16:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash -685881597, now seen corresponding path program 1 times [2022-11-25 22:16:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:26,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023296754] [2022-11-25 22:16:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:26,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:26,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:26,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023296754] [2022-11-25 22:16:26,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023296754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:26,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:26,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:16:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025694514] [2022-11-25 22:16:26,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:26,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:16:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:26,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:16:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:16:26,895 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) [2022-11-25 22:16:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:27,099 INFO L93 Difference]: Finished difference Result 575 states and 638 transitions. [2022-11-25 22:16:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:16:27,099 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 [2022-11-25 22:16:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:27,101 INFO L225 Difference]: With dead ends: 575 [2022-11-25 22:16:27,102 INFO L226 Difference]: Without dead ends: 575 [2022-11-25 22:16:27,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:16:27,103 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:27,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 636 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-25 22:16:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 238. [2022-11-25 22:16:27,109 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) [2022-11-25 22:16:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2022-11-25 22:16:27,113 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 7 [2022-11-25 22:16:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:27,113 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2022-11-25 22:16:27,114 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) [2022-11-25 22:16:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2022-11-25 22:16:27,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:16:27,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:27,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:27,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:16:27,115 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)] === [2022-11-25 22:16:27,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:27,116 INFO L85 PathProgramCache]: Analyzing trace with hash 281311273, now seen corresponding path program 1 times [2022-11-25 22:16:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:27,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098885885] [2022-11-25 22:16:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:27,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:27,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:27,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098885885] [2022-11-25 22:16:27,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098885885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:27,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:27,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:16:27,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808313841] [2022-11-25 22:16:27,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:27,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:16:27,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:16:27,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:27,315 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) [2022-11-25 22:16:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:27,709 INFO L93 Difference]: Finished difference Result 571 states and 634 transitions. [2022-11-25 22:16:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:16:27,710 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 [2022-11-25 22:16:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:27,712 INFO L225 Difference]: With dead ends: 571 [2022-11-25 22:16:27,712 INFO L226 Difference]: Without dead ends: 571 [2022-11-25 22:16:27,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:16:27,714 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 499 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:27,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1022 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:27,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-25 22:16:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 241. [2022-11-25 22:16:27,720 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) [2022-11-25 22:16:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 267 transitions. [2022-11-25 22:16:27,721 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 267 transitions. Word has length 11 [2022-11-25 22:16:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:27,721 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 267 transitions. [2022-11-25 22:16:27,721 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) [2022-11-25 22:16:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 267 transitions. [2022-11-25 22:16:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:16:27,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:27,722 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:27,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 22:16:27,722 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)] === [2022-11-25 22:16:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash -589468412, now seen corresponding path program 1 times [2022-11-25 22:16:27,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:27,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607947167] [2022-11-25 22:16:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:27,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:27,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607947167] [2022-11-25 22:16:27,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607947167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:27,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:27,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:16:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233141939] [2022-11-25 22:16:27,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:27,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:16:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:16:27,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:16:27,890 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) [2022-11-25 22:16:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:28,391 INFO L93 Difference]: Finished difference Result 279 states and 310 transitions. [2022-11-25 22:16:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:16:28,392 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 [2022-11-25 22:16:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:28,393 INFO L225 Difference]: With dead ends: 279 [2022-11-25 22:16:28,393 INFO L226 Difference]: Without dead ends: 279 [2022-11-25 22:16:28,394 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 [2022-11-25 22:16:28,395 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 182 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:28,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 624 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:16:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-25 22:16:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 243. [2022-11-25 22:16:28,400 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) [2022-11-25 22:16:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 272 transitions. [2022-11-25 22:16:28,401 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 272 transitions. Word has length 13 [2022-11-25 22:16:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:28,401 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 272 transitions. [2022-11-25 22:16:28,401 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) [2022-11-25 22:16:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 272 transitions. [2022-11-25 22:16:28,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:16:28,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:28,402 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:28,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 22:16:28,403 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)] === [2022-11-25 22:16:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:28,403 INFO L85 PathProgramCache]: Analyzing trace with hash -589468411, now seen corresponding path program 1 times [2022-11-25 22:16:28,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:28,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534220362] [2022-11-25 22:16:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:28,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:28,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:28,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534220362] [2022-11-25 22:16:28,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534220362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:28,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:28,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:16:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972700199] [2022-11-25 22:16:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:28,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:16:28,675 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) [2022-11-25 22:16:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:29,258 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2022-11-25 22:16:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:16:29,258 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 [2022-11-25 22:16:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:29,260 INFO L225 Difference]: With dead ends: 391 [2022-11-25 22:16:29,260 INFO L226 Difference]: Without dead ends: 391 [2022-11-25 22:16:29,261 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 [2022-11-25 22:16:29,261 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 446 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:29,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 670 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:16:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-25 22:16:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 242. [2022-11-25 22:16:29,267 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) [2022-11-25 22:16:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2022-11-25 22:16:29,267 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 13 [2022-11-25 22:16:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:29,268 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2022-11-25 22:16:29,268 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) [2022-11-25 22:16:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2022-11-25 22:16:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:16:29,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:29,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:29,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 22:16:29,269 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)] === [2022-11-25 22:16:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -244042145, now seen corresponding path program 1 times [2022-11-25 22:16:29,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:29,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52968608] [2022-11-25 22:16:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:29,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:29,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52968608] [2022-11-25 22:16:29,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52968608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:29,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:29,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:16:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67299717] [2022-11-25 22:16:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:29,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:29,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:29,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:16:29,335 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) [2022-11-25 22:16:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:29,552 INFO L93 Difference]: Finished difference Result 356 states and 396 transitions. [2022-11-25 22:16:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:16:29,553 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 [2022-11-25 22:16:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:29,555 INFO L225 Difference]: With dead ends: 356 [2022-11-25 22:16:29,555 INFO L226 Difference]: Without dead ends: 356 [2022-11-25 22:16:29,555 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 [2022-11-25 22:16:29,556 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:29,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 825 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-25 22:16:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 297. [2022-11-25 22:16:29,561 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) [2022-11-25 22:16:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 390 transitions. [2022-11-25 22:16:29,563 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 390 transitions. Word has length 13 [2022-11-25 22:16:29,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:29,563 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 390 transitions. [2022-11-25 22:16:29,563 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) [2022-11-25 22:16:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 390 transitions. [2022-11-25 22:16:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 22:16:29,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:29,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 22:16:29,565 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)] === [2022-11-25 22:16:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash 633132918, now seen corresponding path program 1 times [2022-11-25 22:16:29,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:29,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926351348] [2022-11-25 22:16:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:29,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:29,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926351348] [2022-11-25 22:16:29,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926351348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:29,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:29,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:16:29,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270204244] [2022-11-25 22:16:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:29,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:29,598 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) [2022-11-25 22:16:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:29,668 INFO L93 Difference]: Finished difference Result 284 states and 367 transitions. [2022-11-25 22:16:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:29,668 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 [2022-11-25 22:16:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:29,670 INFO L225 Difference]: With dead ends: 284 [2022-11-25 22:16:29,670 INFO L226 Difference]: Without dead ends: 284 [2022-11-25 22:16:29,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:29,671 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 193 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-25 22:16:29,671 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] [2022-11-25 22:16:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-25 22:16:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-25 22:16:29,676 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) [2022-11-25 22:16:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 367 transitions. [2022-11-25 22:16:29,677 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 367 transitions. Word has length 14 [2022-11-25 22:16:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:29,677 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 367 transitions. [2022-11-25 22:16:29,678 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) [2022-11-25 22:16:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 367 transitions. [2022-11-25 22:16:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 22:16:29,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:29,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:29,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 22:16:29,679 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)] === [2022-11-25 22:16:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896675, now seen corresponding path program 1 times [2022-11-25 22:16:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:29,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609433905] [2022-11-25 22:16:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:29,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:29,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:29,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609433905] [2022-11-25 22:16:29,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609433905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:29,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:29,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:29,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591700517] [2022-11-25 22:16:29,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:29,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:29,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:29,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:29,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:29,711 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) [2022-11-25 22:16:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:29,907 INFO L93 Difference]: Finished difference Result 268 states and 335 transitions. [2022-11-25 22:16:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:29,907 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 [2022-11-25 22:16:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:29,909 INFO L225 Difference]: With dead ends: 268 [2022-11-25 22:16:29,909 INFO L226 Difference]: Without dead ends: 268 [2022-11-25 22:16:29,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:29,909 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 71 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:29,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 235 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-25 22:16:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-11-25 22:16:29,914 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) [2022-11-25 22:16:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 335 transitions. [2022-11-25 22:16:29,915 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 335 transitions. Word has length 15 [2022-11-25 22:16:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:29,915 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 335 transitions. [2022-11-25 22:16:29,916 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) [2022-11-25 22:16:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 335 transitions. [2022-11-25 22:16:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 22:16:29,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:29,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:29,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 22:16:29,917 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)] === [2022-11-25 22:16:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896676, now seen corresponding path program 1 times [2022-11-25 22:16:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:29,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926780292] [2022-11-25 22:16:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:29,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:29,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926780292] [2022-11-25 22:16:29,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926780292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:29,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:29,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:16:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661912250] [2022-11-25 22:16:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:29,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:29,967 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) [2022-11-25 22:16:30,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:30,161 INFO L93 Difference]: Finished difference Result 252 states and 303 transitions. [2022-11-25 22:16:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:30,161 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 [2022-11-25 22:16:30,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:30,162 INFO L225 Difference]: With dead ends: 252 [2022-11-25 22:16:30,163 INFO L226 Difference]: Without dead ends: 252 [2022-11-25 22:16:30,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:30,163 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 55 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:30,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-25 22:16:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-11-25 22:16:30,168 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) [2022-11-25 22:16:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 303 transitions. [2022-11-25 22:16:30,169 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 303 transitions. Word has length 15 [2022-11-25 22:16:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:30,169 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 303 transitions. [2022-11-25 22:16:30,169 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) [2022-11-25 22:16:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 303 transitions. [2022-11-25 22:16:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:16:30,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:30,171 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:30,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 22:16:30,171 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)] === [2022-11-25 22:16:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash 915322282, now seen corresponding path program 1 times [2022-11-25 22:16:30,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:30,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024239583] [2022-11-25 22:16:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:30,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:30,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024239583] [2022-11-25 22:16:30,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024239583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:30,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:30,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:16:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852021743] [2022-11-25 22:16:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:30,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:30,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:16:30,253 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) [2022-11-25 22:16:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:30,410 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2022-11-25 22:16:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:16:30,411 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 [2022-11-25 22:16:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:30,412 INFO L225 Difference]: With dead ends: 272 [2022-11-25 22:16:30,412 INFO L226 Difference]: Without dead ends: 272 [2022-11-25 22:16:30,412 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 [2022-11-25 22:16:30,413 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 [2022-11-25 22:16:30,413 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] [2022-11-25 22:16:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-25 22:16:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 252. [2022-11-25 22:16:30,417 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) [2022-11-25 22:16:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 302 transitions. [2022-11-25 22:16:30,418 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 302 transitions. Word has length 17 [2022-11-25 22:16:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:30,419 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 302 transitions. [2022-11-25 22:16:30,419 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) [2022-11-25 22:16:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 302 transitions. [2022-11-25 22:16:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:16:30,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:30,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:30,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 22:16:30,420 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)] === [2022-11-25 22:16:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash 552141732, now seen corresponding path program 1 times [2022-11-25 22:16:30,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:30,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723616433] [2022-11-25 22:16:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:30,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:30,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:30,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723616433] [2022-11-25 22:16:30,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723616433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:30,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:30,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:16:30,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685614899] [2022-11-25 22:16:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:16:30,498 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) [2022-11-25 22:16:30,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:30,711 INFO L93 Difference]: Finished difference Result 339 states and 384 transitions. [2022-11-25 22:16:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:16:30,711 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 [2022-11-25 22:16:30,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:30,713 INFO L225 Difference]: With dead ends: 339 [2022-11-25 22:16:30,713 INFO L226 Difference]: Without dead ends: 339 [2022-11-25 22:16:30,713 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 [2022-11-25 22:16:30,714 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:30,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 696 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:16:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-25 22:16:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 250. [2022-11-25 22:16:30,719 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) [2022-11-25 22:16:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 297 transitions. [2022-11-25 22:16:30,719 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 297 transitions. Word has length 17 [2022-11-25 22:16:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:30,720 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 297 transitions. [2022-11-25 22:16:30,720 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) [2022-11-25 22:16:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 297 transitions. [2022-11-25 22:16:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 22:16:30,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:30,721 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:30,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 22:16:30,721 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)] === [2022-11-25 22:16:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash 944178417, now seen corresponding path program 1 times [2022-11-25 22:16:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:30,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065460655] [2022-11-25 22:16:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:30,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:31,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:31,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065460655] [2022-11-25 22:16:31,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065460655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:31,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:31,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 22:16:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835393002] [2022-11-25 22:16:31,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:31,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:16:31,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:31,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:16:31,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:16:31,164 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) [2022-11-25 22:16:32,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:32,031 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2022-11-25 22:16:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:16:32,031 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 [2022-11-25 22:16:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:32,033 INFO L225 Difference]: With dead ends: 252 [2022-11-25 22:16:32,033 INFO L226 Difference]: Without dead ends: 252 [2022-11-25 22:16:32,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-11-25 22:16:32,034 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 244 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:32,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 871 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:16:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-25 22:16:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 249. [2022-11-25 22:16:32,038 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) [2022-11-25 22:16:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2022-11-25 22:16:32,038 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 19 [2022-11-25 22:16:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:32,039 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2022-11-25 22:16:32,039 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) [2022-11-25 22:16:32,039 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2022-11-25 22:16:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 22:16:32,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:32,040 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 22:16:32,040 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)] === [2022-11-25 22:16:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash 944178418, now seen corresponding path program 1 times [2022-11-25 22:16:32,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:32,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918240365] [2022-11-25 22:16:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:32,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:32,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:32,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918240365] [2022-11-25 22:16:32,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918240365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:32,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:32,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:16:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763985397] [2022-11-25 22:16:32,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:32,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:16:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:16:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:16:32,755 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) [2022-11-25 22:16:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:34,410 INFO L93 Difference]: Finished difference Result 473 states and 560 transitions. [2022-11-25 22:16:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 22:16:34,411 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 [2022-11-25 22:16:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:34,413 INFO L225 Difference]: With dead ends: 473 [2022-11-25 22:16:34,413 INFO L226 Difference]: Without dead ends: 473 [2022-11-25 22:16:34,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-25 22:16:34,414 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 455 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:34,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1517 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 22:16:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-25 22:16:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 248. [2022-11-25 22:16:34,419 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) [2022-11-25 22:16:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 295 transitions. [2022-11-25 22:16:34,420 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 295 transitions. Word has length 19 [2022-11-25 22:16:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:34,421 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 295 transitions. [2022-11-25 22:16:34,421 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) [2022-11-25 22:16:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 295 transitions. [2022-11-25 22:16:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 22:16:34,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:34,422 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:34,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 22:16:34,422 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)] === [2022-11-25 22:16:34,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:34,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1116123431, now seen corresponding path program 1 times [2022-11-25 22:16:34,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:34,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142560462] [2022-11-25 22:16:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:34,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:34,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:34,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142560462] [2022-11-25 22:16:34,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142560462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:34,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:34,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 22:16:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504587556] [2022-11-25 22:16:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:34,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:16:34,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:34,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:16:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:16:34,596 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) [2022-11-25 22:16:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:35,006 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2022-11-25 22:16:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:16:35,006 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 [2022-11-25 22:16:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:35,007 INFO L225 Difference]: With dead ends: 279 [2022-11-25 22:16:35,008 INFO L226 Difference]: Without dead ends: 279 [2022-11-25 22:16:35,008 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 [2022-11-25 22:16:35,008 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 638 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:35,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 936 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-25 22:16:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 248. [2022-11-25 22:16:35,013 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) [2022-11-25 22:16:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 294 transitions. [2022-11-25 22:16:35,013 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 294 transitions. Word has length 21 [2022-11-25 22:16:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:35,014 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 294 transitions. [2022-11-25 22:16:35,014 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) [2022-11-25 22:16:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 294 transitions. [2022-11-25 22:16:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 22:16:35,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:35,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:35,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 22:16:35,015 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)] === [2022-11-25 22:16:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash -936319035, now seen corresponding path program 1 times [2022-11-25 22:16:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:35,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487644844] [2022-11-25 22:16:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:35,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:35,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487644844] [2022-11-25 22:16:35,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487644844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:35,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:35,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 22:16:35,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140920834] [2022-11-25 22:16:35,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:16:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:16:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:16:35,175 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) [2022-11-25 22:16:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:35,559 INFO L93 Difference]: Finished difference Result 333 states and 377 transitions. [2022-11-25 22:16:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:16:35,560 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 [2022-11-25 22:16:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:35,561 INFO L225 Difference]: With dead ends: 333 [2022-11-25 22:16:35,561 INFO L226 Difference]: Without dead ends: 333 [2022-11-25 22:16:35,562 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 [2022-11-25 22:16:35,562 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:35,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 995 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-25 22:16:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 236. [2022-11-25 22:16:35,566 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) [2022-11-25 22:16:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 273 transitions. [2022-11-25 22:16:35,567 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 273 transitions. Word has length 21 [2022-11-25 22:16:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:35,567 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 273 transitions. [2022-11-25 22:16:35,567 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) [2022-11-25 22:16:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 273 transitions. [2022-11-25 22:16:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 22:16:35,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:35,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 22:16:35,568 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)] === [2022-11-25 22:16:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1038856689, now seen corresponding path program 1 times [2022-11-25 22:16:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:35,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975668026] [2022-11-25 22:16:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:35,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:35,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975668026] [2022-11-25 22:16:35,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975668026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:35,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:35,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:16:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305653677] [2022-11-25 22:16:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:35,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:35,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:35,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:35,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:16:35,697 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) [2022-11-25 22:16:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:36,031 INFO L93 Difference]: Finished difference Result 243 states and 273 transitions. [2022-11-25 22:16:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:16:36,032 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 [2022-11-25 22:16:36,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:36,033 INFO L225 Difference]: With dead ends: 243 [2022-11-25 22:16:36,033 INFO L226 Difference]: Without dead ends: 241 [2022-11-25 22:16:36,033 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 [2022-11-25 22:16:36,034 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 24 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:36,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 461 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-25 22:16:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2022-11-25 22:16:36,038 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) [2022-11-25 22:16:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2022-11-25 22:16:36,039 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 271 transitions. Word has length 22 [2022-11-25 22:16:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:36,040 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 271 transitions. [2022-11-25 22:16:36,040 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) [2022-11-25 22:16:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 271 transitions. [2022-11-25 22:16:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 22:16:36,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:36,041 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] [2022-11-25 22:16:36,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 22:16:36,041 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)] === [2022-11-25 22:16:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash 41868091, now seen corresponding path program 1 times [2022-11-25 22:16:36,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042268386] [2022-11-25 22:16:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:36,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:16:36,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:36,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042268386] [2022-11-25 22:16:36,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042268386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:36,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:36,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:16:36,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846109986] [2022-11-25 22:16:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:36,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:16:36,197 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) [2022-11-25 22:16:36,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:36,501 INFO L93 Difference]: Finished difference Result 249 states and 288 transitions. [2022-11-25 22:16:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:16:36,502 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 [2022-11-25 22:16:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:36,503 INFO L225 Difference]: With dead ends: 249 [2022-11-25 22:16:36,503 INFO L226 Difference]: Without dead ends: 249 [2022-11-25 22:16:36,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:16:36,504 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 48 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:36,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 484 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:16:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-25 22:16:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 234. [2022-11-25 22:16:36,509 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) [2022-11-25 22:16:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 270 transitions. [2022-11-25 22:16:36,509 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 270 transitions. Word has length 23 [2022-11-25 22:16:36,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:36,510 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 270 transitions. [2022-11-25 22:16:36,510 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) [2022-11-25 22:16:36,510 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 270 transitions. [2022-11-25 22:16:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 22:16:36,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:36,511 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] [2022-11-25 22:16:36,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 22:16:36,511 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)] === [2022-11-25 22:16:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:36,512 INFO L85 PathProgramCache]: Analyzing trace with hash 41868092, now seen corresponding path program 1 times [2022-11-25 22:16:36,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:36,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184154516] [2022-11-25 22:16:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:36,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:36,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:36,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:36,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184154516] [2022-11-25 22:16:36,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184154516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:36,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:36,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 22:16:36,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846118831] [2022-11-25 22:16:36,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:36,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 22:16:36,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:36,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 22:16:36,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:16:36,939 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) [2022-11-25 22:16:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:37,814 INFO L93 Difference]: Finished difference Result 345 states and 400 transitions. [2022-11-25 22:16:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:16:37,815 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 [2022-11-25 22:16:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:37,816 INFO L225 Difference]: With dead ends: 345 [2022-11-25 22:16:37,816 INFO L226 Difference]: Without dead ends: 345 [2022-11-25 22:16:37,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:16:37,817 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 423 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:37,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 803 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 22:16:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-25 22:16:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 233. [2022-11-25 22:16:37,822 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) [2022-11-25 22:16:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 269 transitions. [2022-11-25 22:16:37,823 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 269 transitions. Word has length 23 [2022-11-25 22:16:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:37,823 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 269 transitions. [2022-11-25 22:16:37,823 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) [2022-11-25 22:16:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 269 transitions. [2022-11-25 22:16:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 22:16:37,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:37,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:16:37,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 22:16:37,824 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)] === [2022-11-25 22:16:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1764034550, now seen corresponding path program 1 times [2022-11-25 22:16:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400885137] [2022-11-25 22:16:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:37,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:37,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400885137] [2022-11-25 22:16:37,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400885137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:37,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:37,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:16:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485452489] [2022-11-25 22:16:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:16:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:16:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:37,863 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) [2022-11-25 22:16:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:37,941 INFO L93 Difference]: Finished difference Result 220 states and 246 transitions. [2022-11-25 22:16:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:16:37,941 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 [2022-11-25 22:16:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:37,942 INFO L225 Difference]: With dead ends: 220 [2022-11-25 22:16:37,942 INFO L226 Difference]: Without dead ends: 203 [2022-11-25 22:16:37,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:16:37,943 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 26 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-25 22:16:37,943 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] [2022-11-25 22:16:37,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-25 22:16:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-25 22:16:37,947 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) [2022-11-25 22:16:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2022-11-25 22:16:37,948 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 24 [2022-11-25 22:16:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:37,966 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2022-11-25 22:16:37,966 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) [2022-11-25 22:16:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2022-11-25 22:16:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 22:16:37,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:37,967 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] [2022-11-25 22:16:37,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 22:16:37,967 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)] === [2022-11-25 22:16:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358732, now seen corresponding path program 1 times [2022-11-25 22:16:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:37,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229883775] [2022-11-25 22:16:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:38,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:38,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229883775] [2022-11-25 22:16:38,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229883775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:16:38,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912118081] [2022-11-25 22:16:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:38,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:38,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:38,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:16:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:38,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:16:38,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:38,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:16:38,513 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 22:16:38,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 22:16:38,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 22:16:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:38,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:38,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912118081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:38,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:16:38,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2022-11-25 22:16:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519772687] [2022-11-25 22:16:38,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:38,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:16:38,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:38,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:16:38,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-25 22:16:38,625 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) [2022-11-25 22:16:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:39,216 INFO L93 Difference]: Finished difference Result 334 states and 375 transitions. [2022-11-25 22:16:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:16:39,218 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 [2022-11-25 22:16:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:39,219 INFO L225 Difference]: With dead ends: 334 [2022-11-25 22:16:39,219 INFO L226 Difference]: Without dead ends: 334 [2022-11-25 22:16:39,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:16:39,220 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 476 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:39,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 424 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:16:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-25 22:16:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 206. [2022-11-25 22:16:39,224 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) [2022-11-25 22:16:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2022-11-25 22:16:39,225 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 25 [2022-11-25 22:16:39,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:39,225 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2022-11-25 22:16:39,226 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) [2022-11-25 22:16:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2022-11-25 22:16:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 22:16:39,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:39,230 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] [2022-11-25 22:16:39,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:39,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 22:16:39,431 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)] === [2022-11-25 22:16:39,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358733, now seen corresponding path program 1 times [2022-11-25 22:16:39,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:39,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610589240] [2022-11-25 22:16:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:39,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:39,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610589240] [2022-11-25 22:16:39,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610589240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:16:39,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44705630] [2022-11-25 22:16:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:39,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:39,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:39,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:16:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:39,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:16:39,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:39,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 22:16:39,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 22:16:39,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 22:16:39,991 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 22:16:39,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 22:16:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:16:39,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:16:39,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44705630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:39,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:16:39,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2022-11-25 22:16:39,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236615993] [2022-11-25 22:16:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:40,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:16:40,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:16:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:16:40,002 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) [2022-11-25 22:16:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:40,259 INFO L93 Difference]: Finished difference Result 227 states and 260 transitions. [2022-11-25 22:16:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:16:40,260 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 [2022-11-25 22:16:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:40,261 INFO L225 Difference]: With dead ends: 227 [2022-11-25 22:16:40,262 INFO L226 Difference]: Without dead ends: 227 [2022-11-25 22:16:40,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:16:40,262 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 454 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-25 22:16:40,263 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] [2022-11-25 22:16:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-25 22:16:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 207. [2022-11-25 22:16:40,267 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) [2022-11-25 22:16:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2022-11-25 22:16:40,268 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 25 [2022-11-25 22:16:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:40,268 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2022-11-25 22:16:40,268 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) [2022-11-25 22:16:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2022-11-25 22:16:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 22:16:40,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:40,269 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] [2022-11-25 22:16:40,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:16:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 22:16:40,476 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)] === [2022-11-25 22:16:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1726985257, now seen corresponding path program 1 times [2022-11-25 22:16:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:40,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591715027] [2022-11-25 22:16:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:41,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:41,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591715027] [2022-11-25 22:16:41,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591715027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:16:41,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:16:41,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 22:16:41,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056706103] [2022-11-25 22:16:41,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:16:41,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 22:16:41,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:16:41,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 22:16:41,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-25 22:16:41,504 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) [2022-11-25 22:16:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:16:42,818 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-11-25 22:16:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 22:16:42,819 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 [2022-11-25 22:16:42,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:16:42,820 INFO L225 Difference]: With dead ends: 208 [2022-11-25 22:16:42,820 INFO L226 Difference]: Without dead ends: 208 [2022-11-25 22:16:42,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-11-25 22:16:42,821 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 293 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:16:42,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1145 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:16:42,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-25 22:16:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-11-25 22:16:42,825 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) [2022-11-25 22:16:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2022-11-25 22:16:42,826 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 26 [2022-11-25 22:16:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:16:42,827 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2022-11-25 22:16:42,827 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) [2022-11-25 22:16:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2022-11-25 22:16:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 22:16:42,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:16:42,828 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] [2022-11-25 22:16:42,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 22:16:42,828 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)] === [2022-11-25 22:16:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:16:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1527445437, now seen corresponding path program 1 times [2022-11-25 22:16:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:16:42,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561629482] [2022-11-25 22:16:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:16:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:43,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:16:43,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561629482] [2022-11-25 22:16:43,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561629482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:16:43,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062833180] [2022-11-25 22:16:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:16:43,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:16:43,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:16:43,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:16:43,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:16:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:16:43,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-25 22:16:43,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:16:43,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:16:43,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:43,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:43,969 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 22:16:43,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 22:16:43,991 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 [2022-11-25 22:16:43,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 22:16:44,058 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-25 22:16:44,062 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 [2022-11-25 22:16:44,076 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 [2022-11-25 22:16:44,147 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 [2022-11-25 22:16:44,161 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-25 22:16:44,162 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 [2022-11-25 22:16:44,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:44,277 INFO L321 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2022-11-25 22:16:44,278 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 [2022-11-25 22:16:44,296 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-25 22:16:44,296 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 [2022-11-25 22:16:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:44,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:16:45,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:16:45,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062833180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:16:45,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [229123516] [2022-11-25 22:16:45,199 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-25 22:16:45,199 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:16:45,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:16:45,209 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:16:45,210 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:16:45,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:16:45,343 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 [2022-11-25 22:16:45,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-25 22:16:45,367 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 [2022-11-25 22:16:45,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:16:45,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,415 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 [2022-11-25 22:16:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 22:16:45,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,463 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 [2022-11-25 22:16:45,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,489 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 [2022-11-25 22:16:45,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,506 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 [2022-11-25 22:16:45,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,521 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 [2022-11-25 22:16:45,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,572 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 [2022-11-25 22:16:45,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,590 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 [2022-11-25 22:16:45,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,610 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 [2022-11-25 22:16:45,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,687 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 [2022-11-25 22:16:45,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:45,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:45,772 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-11-25 22:16:45,773 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 [2022-11-25 22:16:45,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,803 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 [2022-11-25 22:16:45,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,826 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 [2022-11-25 22:16:45,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:45,918 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-25 22:16:45,919 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 [2022-11-25 22:16:45,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,960 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 [2022-11-25 22:16:45,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:45,981 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 [2022-11-25 22:16:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,006 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 [2022-11-25 22:16:46,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,081 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-25 22:16:46,082 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 [2022-11-25 22:16:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,110 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 [2022-11-25 22:16:46,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,140 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 [2022-11-25 22:16:46,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,320 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-25 22:16:46,321 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 [2022-11-25 22:16:46,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,414 INFO L321 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-11-25 22:16:46,415 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 [2022-11-25 22:16:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:46,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:46,451 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-25 22:16:46,452 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 [2022-11-25 22:16:46,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:47,064 INFO L321 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2022-11-25 22:16:47,064 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 [2022-11-25 22:16:48,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:48,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:48,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:48,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:48,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:48,237 INFO L321 Elim1Store]: treesize reduction 200, result has 17.0 percent of original size [2022-11-25 22:16:48,238 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 [2022-11-25 22:16:48,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:48,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:48,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:48,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:48,431 INFO L321 Elim1Store]: treesize reduction 298, result has 17.9 percent of original size [2022-11-25 22:16:48,432 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 [2022-11-25 22:16:48,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:48,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:48,553 INFO L321 Elim1Store]: treesize reduction 147, result has 9.3 percent of original size [2022-11-25 22:16:48,554 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 [2022-11-25 22:16:50,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:50,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:50,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:50,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:50,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:50,445 INFO L321 Elim1Store]: treesize reduction 242, result has 10.4 percent of original size [2022-11-25 22:16:50,446 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 [2022-11-25 22:16:50,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:50,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:50,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:50,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:50,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:50,712 INFO L321 Elim1Store]: treesize reduction 330, result has 8.8 percent of original size [2022-11-25 22:16:50,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 5842 treesize of output 5151 [2022-11-25 22:16:50,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:51,050 INFO L321 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2022-11-25 22:16:51,050 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 [2022-11-25 22:16:51,240 INFO L321 Elim1Store]: treesize reduction 184, result has 22.7 percent of original size [2022-11-25 22:16:51,240 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 [2022-11-25 22:16:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:54,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:54,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:54,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:55,041 INFO L321 Elim1Store]: treesize reduction 230, result has 10.9 percent of original size [2022-11-25 22:16:55,042 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 [2022-11-25 22:16:55,373 INFO L321 Elim1Store]: treesize reduction 262, result has 18.9 percent of original size [2022-11-25 22:16:55,374 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 [2022-11-25 22:16:55,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:55,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:55,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:55,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:55,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:55,655 INFO L321 Elim1Store]: treesize reduction 318, result has 9.1 percent of original size [2022-11-25 22:16:55,656 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 [2022-11-25 22:16:58,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:58,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:58,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:16:58,257 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:16:58,258 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 [2022-11-25 22:16:58,281 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:16:58,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:16:58,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:58,306 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 [2022-11-25 22:16:58,313 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 [2022-11-25 22:16:58,357 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 22:16:58,358 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 [2022-11-25 22:16:58,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:16:58,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,388 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 [2022-11-25 22:16:58,424 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:16:58,425 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 [2022-11-25 22:16:58,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,436 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 [2022-11-25 22:16:58,452 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 [2022-11-25 22:16:58,460 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 [2022-11-25 22:16:58,470 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 [2022-11-25 22:16:58,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:16:58,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:58,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:58,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:16:58,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 22:16:58,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:16:58,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:16:58,563 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 [2022-11-25 22:16:58,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:58,602 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:16:58,602 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 [2022-11-25 22:16:58,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:58,617 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:16:58,618 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 [2022-11-25 22:16:58,631 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 [2022-11-25 22:16:58,700 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 [2022-11-25 22:16:58,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:58,757 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:16:58,757 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 [2022-11-25 22:16:58,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:16:58,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:16:58,809 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:16:58,810 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 [2022-11-25 22:16:58,894 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:16:58,894 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 [2022-11-25 22:16:58,933 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:16:58,933 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 [2022-11-25 22:16:58,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-25 22:16:59,182 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-25 22:16:59,183 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 [2022-11-25 22:16:59,244 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:16:59,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:16:59,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:59,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:16:59,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:16:59,372 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:16:59,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:16:59,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:16:59,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:16:59,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:16:59,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:16:59,408 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:17:02,190 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 [2022-11-25 22:17:02,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:17:02,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:17:02,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2022-11-25 22:17:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488847584] [2022-11-25 22:17:02,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:17:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 22:17:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:17:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 22:17:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1487, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 22:17:02,193 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) [2022-11-25 22:17:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:17:03,440 INFO L93 Difference]: Finished difference Result 255 states and 289 transitions. [2022-11-25 22:17:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:17:03,441 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 [2022-11-25 22:17:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:17:03,442 INFO L225 Difference]: With dead ends: 255 [2022-11-25 22:17:03,442 INFO L226 Difference]: Without dead ends: 255 [2022-11-25 22:17:03,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 22:17:03,444 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 81 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:17:03,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1439 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 22:17:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-25 22:17:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 229. [2022-11-25 22:17:03,448 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) [2022-11-25 22:17:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2022-11-25 22:17:03,449 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 27 [2022-11-25 22:17:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:17:03,449 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2022-11-25 22:17:03,450 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) [2022-11-25 22:17:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2022-11-25 22:17:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-25 22:17:03,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:17:03,451 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] [2022-11-25 22:17:03,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:17:03,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 22:17:03,657 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)] === [2022-11-25 22:17:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:17:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 688966908, now seen corresponding path program 1 times [2022-11-25 22:17:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:17:03,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975187366] [2022-11-25 22:17:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:17:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:17:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:17:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:17:03,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:17:03,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975187366] [2022-11-25 22:17:03,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975187366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:17:03,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:17:03,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:17:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773701508] [2022-11-25 22:17:03,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:17:03,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:17:03,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:17:03,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:17:03,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:17:03,858 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) [2022-11-25 22:17:04,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:17:04,091 INFO L93 Difference]: Finished difference Result 234 states and 264 transitions. [2022-11-25 22:17:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:17:04,091 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 [2022-11-25 22:17:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:17:04,092 INFO L225 Difference]: With dead ends: 234 [2022-11-25 22:17:04,092 INFO L226 Difference]: Without dead ends: 234 [2022-11-25 22:17:04,093 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 [2022-11-25 22:17:04,093 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 2 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:17:04,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 604 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:17:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-25 22:17:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-11-25 22:17:04,097 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) [2022-11-25 22:17:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 263 transitions. [2022-11-25 22:17:04,098 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 263 transitions. Word has length 31 [2022-11-25 22:17:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:17:04,098 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 263 transitions. [2022-11-25 22:17:04,098 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) [2022-11-25 22:17:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 263 transitions. [2022-11-25 22:17:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 22:17:04,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:17:04,099 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] [2022-11-25 22:17:04,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 22:17:04,099 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)] === [2022-11-25 22:17:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:17:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 373171140, now seen corresponding path program 2 times [2022-11-25 22:17:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:17:04,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926521344] [2022-11-25 22:17:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:17:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:17:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:17:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:17:05,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:17:05,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926521344] [2022-11-25 22:17:05,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926521344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:17:05,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973854314] [2022-11-25 22:17:05,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:17:05,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:17:05,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:17:05,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:17:05,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:17:05,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 22:17:05,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:17:05,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-25 22:17:05,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:17:05,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:17:05,911 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:05,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:05,931 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:17:05,932 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 [2022-11-25 22:17:05,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:06,068 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-25 22:17:06,069 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 [2022-11-25 22:17:06,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:06,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:06,141 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 [2022-11-25 22:17:06,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:06,298 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 [2022-11-25 22:17:06,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:06,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:06,317 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:17:06,318 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 [2022-11-25 22:17:06,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:06,433 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 [2022-11-25 22:17:06,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:06,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:06,451 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:17:06,452 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 [2022-11-25 22:17:06,493 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 [2022-11-25 22:17:06,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:06,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:06,665 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-25 22:17:06,665 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 [2022-11-25 22:17:06,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:06,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:06,795 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 [2022-11-25 22:17:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:17:06,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:17:07,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:07,490 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 [2022-11-25 22:17:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:17:10,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973854314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:17:10,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [422347932] [2022-11-25 22:17:10,199 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-25 22:17:10,200 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:17:10,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:17:10,200 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:17:10,200 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:17:10,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:17:10,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-25 22:17:10,257 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 [2022-11-25 22:17:10,264 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 [2022-11-25 22:17:10,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 22:17:10,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:10,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:10,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,320 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 [2022-11-25 22:17:10,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,343 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 [2022-11-25 22:17:10,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,355 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 [2022-11-25 22:17:10,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-25 22:17:10,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,406 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 [2022-11-25 22:17:10,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,421 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 [2022-11-25 22:17:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,438 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 [2022-11-25 22:17:10,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,530 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 [2022-11-25 22:17:10,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:10,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:10,593 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-25 22:17:10,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 113 [2022-11-25 22:17:10,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,614 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 [2022-11-25 22:17:10,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,632 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 [2022-11-25 22:17:10,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:10,709 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-25 22:17:10,710 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 [2022-11-25 22:17:10,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,731 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 [2022-11-25 22:17:10,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,750 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 [2022-11-25 22:17:10,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,787 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 [2022-11-25 22:17:10,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:10,856 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-25 22:17:10,856 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 [2022-11-25 22:17:10,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,883 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 [2022-11-25 22:17:10,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:10,910 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 [2022-11-25 22:17:11,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:11,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:11,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:11,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:11,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:11,058 INFO L321 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-11-25 22:17:11,058 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 [2022-11-25 22:17:11,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:11,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:11,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:11,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:11,108 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-25 22:17:11,109 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 [2022-11-25 22:17:11,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:11,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:11,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:11,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:11,187 INFO L321 Elim1Store]: treesize reduction 154, result has 26.0 percent of original size [2022-11-25 22:17:11,187 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 [2022-11-25 22:17:11,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:11,754 INFO L321 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2022-11-25 22:17:11,755 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 [2022-11-25 22:17:12,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:12,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:12,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:12,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:12,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:12,421 INFO L321 Elim1Store]: treesize reduction 118, result has 22.9 percent of original size [2022-11-25 22:17:12,421 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 [2022-11-25 22:17:12,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:12,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:12,468 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-11-25 22:17:12,468 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 [2022-11-25 22:17:12,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:12,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:12,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:12,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:12,595 INFO L321 Elim1Store]: treesize reduction 234, result has 21.7 percent of original size [2022-11-25 22:17:12,595 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 [2022-11-25 22:17:13,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:13,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:13,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:13,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:13,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:13,216 INFO L321 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2022-11-25 22:17:13,216 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 [2022-11-25 22:17:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:13,465 INFO L321 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2022-11-25 22:17:13,466 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 [2022-11-25 22:17:13,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:13,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:13,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:13,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:13,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:13,615 INFO L321 Elim1Store]: treesize reduction 232, result has 8.3 percent of original size [2022-11-25 22:17:13,616 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 [2022-11-25 22:17:13,764 INFO L321 Elim1Store]: treesize reduction 128, result has 28.1 percent of original size [2022-11-25 22:17:13,765 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 [2022-11-25 22:17:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:14,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:14,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:14,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:14,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:14,662 INFO L321 Elim1Store]: treesize reduction 120, result has 11.1 percent of original size [2022-11-25 22:17:14,663 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 [2022-11-25 22:17:14,831 INFO L321 Elim1Store]: treesize reduction 198, result has 22.4 percent of original size [2022-11-25 22:17:14,832 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 [2022-11-25 22:17:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:14,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:14,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:14,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:14,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:14,944 INFO L321 Elim1Store]: treesize reduction 224, result has 8.6 percent of original size [2022-11-25 22:17:14,945 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 [2022-11-25 22:17:15,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:15,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:15,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:17:15,569 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:17:15,569 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 [2022-11-25 22:17:15,590 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:15,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:15,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:15,608 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 19 treesize of output 1 [2022-11-25 22:17:15,614 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 [2022-11-25 22:17:15,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,635 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 [2022-11-25 22:17:15,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:15,686 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:17:15,686 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 [2022-11-25 22:17:15,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,701 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 [2022-11-25 22:17:15,709 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 [2022-11-25 22:17:15,723 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 [2022-11-25 22:17:15,731 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 [2022-11-25 22:17:15,742 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 [2022-11-25 22:17:15,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:15,760 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 13 treesize of output 9 [2022-11-25 22:17:15,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:17:15,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 22:17:15,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:17:15,829 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 [2022-11-25 22:17:15,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:15,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:15,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:15,875 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:17:15,875 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 [2022-11-25 22:17:15,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:15,902 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:17:15,903 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 [2022-11-25 22:17:15,912 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 [2022-11-25 22:17:15,969 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 [2022-11-25 22:17:15,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:15,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:16,025 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:17:16,025 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 [2022-11-25 22:17:16,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:16,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:16,078 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:17:16,079 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 [2022-11-25 22:17:16,151 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:17:16,151 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 [2022-11-25 22:17:16,192 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:17:16,193 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 [2022-11-25 22:17:16,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-25 22:17:16,433 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-25 22:17:16,433 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 [2022-11-25 22:17:16,529 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:16,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:16,552 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-25 22:17:16,553 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 [2022-11-25 22:17:16,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:16,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:16,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:17:16,657 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:16,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:16,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:17:16,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:16,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:16,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:16,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:16,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:16,690 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:17:21,556 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 [2022-11-25 22:17:21,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:17:21,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:17:21,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 14] total 37 [2022-11-25 22:17:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246228548] [2022-11-25 22:17:21,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:17:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-25 22:17:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:17:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-25 22:17:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3295, Unknown=0, NotChecked=0, Total=3540 [2022-11-25 22:17:21,559 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) [2022-11-25 22:17:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:17:26,073 INFO L93 Difference]: Finished difference Result 265 states and 296 transitions. [2022-11-25 22:17:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 22:17:26,074 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 [2022-11-25 22:17:26,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:17:26,075 INFO L225 Difference]: With dead ends: 265 [2022-11-25 22:17:26,075 INFO L226 Difference]: Without dead ends: 265 [2022-11-25 22:17:26,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=591, Invalid=4959, Unknown=0, NotChecked=0, Total=5550 [2022-11-25 22:17:26,078 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 923 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:17:26,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2410 Invalid, 3423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 22:17:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-25 22:17:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 232. [2022-11-25 22:17:26,083 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) [2022-11-25 22:17:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 262 transitions. [2022-11-25 22:17:26,084 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 262 transitions. Word has length 33 [2022-11-25 22:17:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:17:26,084 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 262 transitions. [2022-11-25 22:17:26,085 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) [2022-11-25 22:17:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 262 transitions. [2022-11-25 22:17:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 22:17:26,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:17:26,085 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] [2022-11-25 22:17:26,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:17:26,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:17:26,292 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)] === [2022-11-25 22:17:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:17:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash 373171141, now seen corresponding path program 1 times [2022-11-25 22:17:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:17:26,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193211193] [2022-11-25 22:17:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:17:26,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:17:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:17:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:17:28,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:17:28,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193211193] [2022-11-25 22:17:28,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193211193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:17:28,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915918206] [2022-11-25 22:17:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:17:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:17:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:17:28,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:17:28,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:17:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:17:28,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-25 22:17:28,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:17:28,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:17:28,612 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:28,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:28,619 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 [2022-11-25 22:17:28,646 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 22:17:28,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 22:17:28,652 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 [2022-11-25 22:17:28,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:28,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:28,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:28,826 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 [2022-11-25 22:17:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:28,889 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 [2022-11-25 22:17:28,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:28,898 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 [2022-11-25 22:17:29,007 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-25 22:17:29,008 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 [2022-11-25 22:17:29,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:29,022 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 [2022-11-25 22:17:29,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:29,135 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 [2022-11-25 22:17:29,154 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-25 22:17:29,154 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 [2022-11-25 22:17:29,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:29,390 INFO L321 Elim1Store]: treesize reduction 103, result has 14.2 percent of original size [2022-11-25 22:17:29,391 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 [2022-11-25 22:17:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:29,400 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:17:29,400 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 [2022-11-25 22:17:29,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:29,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2022-11-25 22:17:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:29,518 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 [2022-11-25 22:17:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:17:29,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:17:35,639 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 [2022-11-25 22:17:35,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:35,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:40,903 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 [2022-11-25 22:17:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-25 22:17:42,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915918206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:17:42,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1834990026] [2022-11-25 22:17:42,403 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-25 22:17:42,403 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:17:42,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:17:42,404 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:17:42,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:17:42,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:17:42,444 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 [2022-11-25 22:17:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-25 22:17:42,462 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 [2022-11-25 22:17:42,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 22:17:42,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,512 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 [2022-11-25 22:17:42,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:42,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,547 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 [2022-11-25 22:17:42,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,561 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 [2022-11-25 22:17:42,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,574 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 [2022-11-25 22:17:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,598 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 [2022-11-25 22:17:42,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:17:42,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,629 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 [2022-11-25 22:17:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,674 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 [2022-11-25 22:17:42,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:42,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:42,743 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-11-25 22:17:42,744 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 [2022-11-25 22:17:42,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,768 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 [2022-11-25 22:17:42,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,788 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 [2022-11-25 22:17:42,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:42,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:42,872 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-25 22:17:42,873 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 [2022-11-25 22:17:42,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,906 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 58 treesize of output 51 [2022-11-25 22:17:42,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,931 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 [2022-11-25 22:17:42,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:42,974 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 [2022-11-25 22:17:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,041 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-25 22:17:43,042 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 [2022-11-25 22:17:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,071 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 [2022-11-25 22:17:43,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,103 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 [2022-11-25 22:17:43,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,265 INFO L321 Elim1Store]: treesize reduction 80, result has 27.3 percent of original size [2022-11-25 22:17:43,265 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 [2022-11-25 22:17:43,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,299 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-25 22:17:43,300 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 [2022-11-25 22:17:43,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:43,384 INFO L321 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2022-11-25 22:17:43,384 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 [2022-11-25 22:17:43,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:43,934 INFO L321 Elim1Store]: treesize reduction 338, result has 16.7 percent of original size [2022-11-25 22:17:43,935 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 [2022-11-25 22:17:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:44,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:44,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:44,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:44,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:44,687 INFO L321 Elim1Store]: treesize reduction 126, result has 25.4 percent of original size [2022-11-25 22:17:44,688 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 [2022-11-25 22:17:44,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:44,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:44,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:44,869 INFO L321 Elim1Store]: treesize reduction 346, result has 14.4 percent of original size [2022-11-25 22:17:44,870 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 [2022-11-25 22:17:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:44,953 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-11-25 22:17:44,954 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 [2022-11-25 22:17:45,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:45,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:45,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:45,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:45,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:45,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:45,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:45,756 INFO L321 Elim1Store]: treesize reduction 134, result has 13.5 percent of original size [2022-11-25 22:17:45,756 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 [2022-11-25 22:17:45,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:45,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:45,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:45,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:45,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:46,003 INFO L321 Elim1Store]: treesize reduction 376, result has 8.3 percent of original size [2022-11-25 22:17:46,003 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 [2022-11-25 22:17:46,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:46,382 INFO L321 Elim1Store]: treesize reduction 458, result has 14.4 percent of original size [2022-11-25 22:17:46,382 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 [2022-11-25 22:17:46,618 INFO L321 Elim1Store]: treesize reduction 152, result has 29.0 percent of original size [2022-11-25 22:17:46,619 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 [2022-11-25 22:17:47,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:47,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:47,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:47,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:47,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:47,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:47,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:47,978 INFO L321 Elim1Store]: treesize reduction 126, result has 14.3 percent of original size [2022-11-25 22:17:47,978 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 [2022-11-25 22:17:48,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:48,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:48,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:48,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:48,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:48,210 INFO L321 Elim1Store]: treesize reduction 364, result has 8.5 percent of original size [2022-11-25 22:17:48,211 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 [2022-11-25 22:17:48,430 INFO L321 Elim1Store]: treesize reduction 228, result has 23.2 percent of original size [2022-11-25 22:17:48,431 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 [2022-11-25 22:17:49,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:17:49,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:49,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:49,520 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:49,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:49,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:17:49,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:49,548 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 [2022-11-25 22:17:49,555 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 [2022-11-25 22:17:49,595 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 22:17:49,595 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 [2022-11-25 22:17:49,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,606 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 [2022-11-25 22:17:49,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:49,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,625 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 [2022-11-25 22:17:49,667 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:17:49,667 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 [2022-11-25 22:17:49,685 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 [2022-11-25 22:17:49,696 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 [2022-11-25 22:17:49,706 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 [2022-11-25 22:17:49,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:49,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:17:49,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:49,767 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 22:17:49,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:17:49,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:49,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-25 22:17:49,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:49,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:49,842 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:17:49,842 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 [2022-11-25 22:17:49,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:17:49,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:49,871 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:17:49,871 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 [2022-11-25 22:17:49,922 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 [2022-11-25 22:17:49,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:49,978 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:17:49,979 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 [2022-11-25 22:17:49,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:49,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:50,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:17:50,038 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:17:50,038 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 [2022-11-25 22:17:50,106 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:17:50,106 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 [2022-11-25 22:17:50,143 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:17:50,143 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 [2022-11-25 22:17:50,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-25 22:17:50,353 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-25 22:17:50,354 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 [2022-11-25 22:17:50,482 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:50,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:50,522 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:50,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:50,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:50,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:17:50,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:17:50,640 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:17:50,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:17:50,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:17:50,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:17:50,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:50,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:50,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:17:50,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:17:50,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:17:55,799 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 [2022-11-25 22:17:55,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:17:55,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:17:55,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 13] total 40 [2022-11-25 22:17:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260526751] [2022-11-25 22:17:55,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:17:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-25 22:17:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:17:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-25 22:17:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3550, Unknown=1, NotChecked=120, Total=3906 [2022-11-25 22:17:55,803 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) [2022-11-25 22:18:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:06,466 INFO L93 Difference]: Finished difference Result 328 states and 372 transitions. [2022-11-25 22:18:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 22:18:06,466 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 [2022-11-25 22:18:06,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:06,468 INFO L225 Difference]: With dead ends: 328 [2022-11-25 22:18:06,468 INFO L226 Difference]: Without dead ends: 328 [2022-11-25 22:18:06,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=615, Invalid=5394, Unknown=1, NotChecked=152, Total=6162 [2022-11-25 22:18:06,470 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1067 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s 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, 7.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:06,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 2397 Invalid, 4358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3974 Invalid, 0 Unknown, 316 Unchecked, 7.5s Time] [2022-11-25 22:18:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-25 22:18:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 231. [2022-11-25 22:18:06,475 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) [2022-11-25 22:18:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-11-25 22:18:06,476 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 33 [2022-11-25 22:18:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:06,477 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-11-25 22:18:06,477 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) [2022-11-25 22:18:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-11-25 22:18:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 22:18:06,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:06,477 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] [2022-11-25 22:18:06,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:06,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:06,678 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)] === [2022-11-25 22:18:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash 671181745, now seen corresponding path program 1 times [2022-11-25 22:18:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:06,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284979230] [2022-11-25 22:18:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:06,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:18:07,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284979230] [2022-11-25 22:18:07,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284979230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:07,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:07,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 22:18:07,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528567654] [2022-11-25 22:18:07,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:07,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 22:18:07,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:07,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 22:18:07,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:18:07,100 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) [2022-11-25 22:18:07,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:07,790 INFO L93 Difference]: Finished difference Result 356 states and 407 transitions. [2022-11-25 22:18:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 22:18:07,790 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 [2022-11-25 22:18:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:07,792 INFO L225 Difference]: With dead ends: 356 [2022-11-25 22:18:07,793 INFO L226 Difference]: Without dead ends: 356 [2022-11-25 22:18:07,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-25 22:18:07,793 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 950 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:07,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 559 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:18:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-25 22:18:07,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 284. [2022-11-25 22:18:07,799 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) [2022-11-25 22:18:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 347 transitions. [2022-11-25 22:18:07,800 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 347 transitions. Word has length 33 [2022-11-25 22:18:07,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:07,801 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 347 transitions. [2022-11-25 22:18:07,801 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) [2022-11-25 22:18:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 347 transitions. [2022-11-25 22:18:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 22:18:07,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:07,802 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] [2022-11-25 22:18:07,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-25 22:18:07,802 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)] === [2022-11-25 22:18:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash 944318581, now seen corresponding path program 1 times [2022-11-25 22:18:07,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:07,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626268264] [2022-11-25 22:18:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:18:07,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:07,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626268264] [2022-11-25 22:18:07,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626268264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:07,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:07,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 22:18:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82921044] [2022-11-25 22:18:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:18:07,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:18:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:18:07,971 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) [2022-11-25 22:18:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:08,357 INFO L93 Difference]: Finished difference Result 386 states and 435 transitions. [2022-11-25 22:18:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 22:18:08,357 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 [2022-11-25 22:18:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:08,359 INFO L225 Difference]: With dead ends: 386 [2022-11-25 22:18:08,359 INFO L226 Difference]: Without dead ends: 386 [2022-11-25 22:18:08,359 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 [2022-11-25 22:18:08,360 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:08,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 654 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:18:08,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-25 22:18:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2022-11-25 22:18:08,366 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) [2022-11-25 22:18:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 343 transitions. [2022-11-25 22:18:08,367 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 343 transitions. Word has length 37 [2022-11-25 22:18:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:08,367 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 343 transitions. [2022-11-25 22:18:08,367 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) [2022-11-25 22:18:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 343 transitions. [2022-11-25 22:18:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 22:18:08,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:08,368 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] [2022-11-25 22:18:08,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 22:18:08,369 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)] === [2022-11-25 22:18:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1458941221, now seen corresponding path program 1 times [2022-11-25 22:18:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:08,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469706092] [2022-11-25 22:18:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:08,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:18:08,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:08,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469706092] [2022-11-25 22:18:08,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469706092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:08,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:08,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 22:18:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235476506] [2022-11-25 22:18:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:08,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:18:08,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:18:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:18:08,775 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) [2022-11-25 22:18:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:09,610 INFO L93 Difference]: Finished difference Result 384 states and 431 transitions. [2022-11-25 22:18:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:18:09,610 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 [2022-11-25 22:18:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:09,612 INFO L225 Difference]: With dead ends: 384 [2022-11-25 22:18:09,612 INFO L226 Difference]: Without dead ends: 384 [2022-11-25 22:18:09,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:18:09,614 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 869 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:09,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 305 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 22:18:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-25 22:18:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2022-11-25 22:18:09,620 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) [2022-11-25 22:18:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 392 transitions. [2022-11-25 22:18:09,621 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 392 transitions. Word has length 38 [2022-11-25 22:18:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:09,622 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 392 transitions. [2022-11-25 22:18:09,622 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) [2022-11-25 22:18:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 392 transitions. [2022-11-25 22:18:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 22:18:09,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:09,623 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] [2022-11-25 22:18:09,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 22:18:09,623 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)] === [2022-11-25 22:18:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382676, now seen corresponding path program 1 times [2022-11-25 22:18:09,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508936364] [2022-11-25 22:18:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:18:09,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:09,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508936364] [2022-11-25 22:18:09,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508936364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:09,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:09,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:18:09,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118390210] [2022-11-25 22:18:09,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:18:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:18:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:18:09,739 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) [2022-11-25 22:18:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:10,181 INFO L93 Difference]: Finished difference Result 398 states and 499 transitions. [2022-11-25 22:18:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:18:10,182 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 [2022-11-25 22:18:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:10,183 INFO L225 Difference]: With dead ends: 398 [2022-11-25 22:18:10,183 INFO L226 Difference]: Without dead ends: 398 [2022-11-25 22:18:10,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:18:10,184 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 209 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:10,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 384 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:18:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-25 22:18:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 308. [2022-11-25 22:18:10,192 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) [2022-11-25 22:18:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 397 transitions. [2022-11-25 22:18:10,194 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 397 transitions. Word has length 38 [2022-11-25 22:18:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:10,194 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 397 transitions. [2022-11-25 22:18:10,195 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) [2022-11-25 22:18:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 397 transitions. [2022-11-25 22:18:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 22:18:10,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:10,195 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] [2022-11-25 22:18:10,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-25 22:18:10,196 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)] === [2022-11-25 22:18:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:10,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382675, now seen corresponding path program 1 times [2022-11-25 22:18:10,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:10,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973938839] [2022-11-25 22:18:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:10,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:18:10,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:10,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973938839] [2022-11-25 22:18:10,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973938839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:18:10,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:18:10,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:18:10,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554072950] [2022-11-25 22:18:10,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:18:10,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:18:10,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:18:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:18:10,770 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) [2022-11-25 22:18:11,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:11,851 INFO L93 Difference]: Finished difference Result 402 states and 455 transitions. [2022-11-25 22:18:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 22:18:11,852 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 [2022-11-25 22:18:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:11,854 INFO L225 Difference]: With dead ends: 402 [2022-11-25 22:18:11,854 INFO L226 Difference]: Without dead ends: 402 [2022-11-25 22:18:11,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2022-11-25 22:18:11,854 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 1099 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:11,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 591 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:18:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-25 22:18:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2022-11-25 22:18:11,861 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) [2022-11-25 22:18:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 396 transitions. [2022-11-25 22:18:11,862 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 396 transitions. Word has length 38 [2022-11-25 22:18:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:11,862 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 396 transitions. [2022-11-25 22:18:11,863 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) [2022-11-25 22:18:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 396 transitions. [2022-11-25 22:18:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 22:18:11,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:11,863 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] [2022-11-25 22:18:11,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-25 22:18:11,864 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)] === [2022-11-25 22:18:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2017471956, now seen corresponding path program 1 times [2022-11-25 22:18:11,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:11,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569789122] [2022-11-25 22:18:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:18:12,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:12,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569789122] [2022-11-25 22:18:12,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569789122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:12,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908381870] [2022-11-25 22:18:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:12,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:12,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:12,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:12,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:18:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:13,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-25 22:18:13,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:13,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:13,135 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 [2022-11-25 22:18:13,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,211 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 [2022-11-25 22:18:13,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:18:13,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:18:13,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,301 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 [2022-11-25 22:18:13,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,377 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 [2022-11-25 22:18:13,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:18:13,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:18:13,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:13,489 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-25 22:18:13,492 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 [2022-11-25 22:18:13,575 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 [2022-11-25 22:18:13,578 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 [2022-11-25 22:18:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:18:13,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:18:14,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:18:14,078 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-25 22:18:14,091 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 [2022-11-25 22:18:14,096 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 [2022-11-25 22:18:14,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:18:14,110 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-25 22:18:14,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,118 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 [2022-11-25 22:18:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:18:14,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908381870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:18:14,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1260764966] [2022-11-25 22:18:14,185 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-25 22:18:14,185 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:18:14,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:18:14,189 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:18:14,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:18:14,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:18:14,245 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 [2022-11-25 22:18:14,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-25 22:18:14,270 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 [2022-11-25 22:18:14,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:18:14,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-25 22:18:14,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,315 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 [2022-11-25 22:18:14,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:18:14,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,348 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 [2022-11-25 22:18:14,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,360 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 [2022-11-25 22:18:14,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,372 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 [2022-11-25 22:18:14,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:18:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,408 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 [2022-11-25 22:18:14,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,432 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 [2022-11-25 22:18:14,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,490 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 [2022-11-25 22:18:14,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,552 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-25 22:18:14,552 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 [2022-11-25 22:18:14,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,572 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 [2022-11-25 22:18:14,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,593 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 [2022-11-25 22:18:14,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,661 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-25 22:18:14,662 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 [2022-11-25 22:18:14,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,686 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 [2022-11-25 22:18:14,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,730 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 [2022-11-25 22:18:14,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,752 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 [2022-11-25 22:18:14,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,818 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-25 22:18:14,818 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 [2022-11-25 22:18:14,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,848 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 [2022-11-25 22:18:14,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,878 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 [2022-11-25 22:18:14,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:14,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:14,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:15,020 INFO L321 Elim1Store]: treesize reduction 80, result has 27.3 percent of original size [2022-11-25 22:18:15,021 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 [2022-11-25 22:18:15,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:15,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:15,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:15,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:15,054 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-25 22:18:15,055 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 [2022-11-25 22:18:15,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:15,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:15,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:15,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:15,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:15,125 INFO L321 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2022-11-25 22:18:15,126 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 [2022-11-25 22:18:15,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:15,704 INFO L321 Elim1Store]: treesize reduction 338, result has 16.7 percent of original size [2022-11-25 22:18:15,704 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 [2022-11-25 22:18:16,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:16,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:16,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:16,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:16,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:16,438 INFO L321 Elim1Store]: treesize reduction 220, result has 18.2 percent of original size [2022-11-25 22:18:16,439 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 [2022-11-25 22:18:16,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:16,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:16,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:16,626 INFO L321 Elim1Store]: treesize reduction 384, result has 13.1 percent of original size [2022-11-25 22:18:16,627 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 [2022-11-25 22:18:16,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:16,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:16,715 INFO L321 Elim1Store]: treesize reduction 159, result has 8.6 percent of original size [2022-11-25 22:18:16,715 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 [2022-11-25 22:18:17,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:17,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:17,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:17,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:17,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:17,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:17,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:17,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:17,826 INFO L321 Elim1Store]: treesize reduction 260, result has 11.6 percent of original size [2022-11-25 22:18:17,827 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 [2022-11-25 22:18:17,990 INFO L321 Elim1Store]: treesize reduction 208, result has 24.1 percent of original size [2022-11-25 22:18:17,990 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 [2022-11-25 22:18:18,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:18,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:18,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:18,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:18,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:18,219 INFO L321 Elim1Store]: treesize reduction 448, result has 9.1 percent of original size [2022-11-25 22:18:18,220 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 [2022-11-25 22:18:18,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:18,566 INFO L321 Elim1Store]: treesize reduction 458, result has 14.4 percent of original size [2022-11-25 22:18:18,566 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 [2022-11-25 22:18:22,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:22,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:22,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:22,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,328 INFO L321 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2022-11-25 22:18:22,329 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 [2022-11-25 22:18:22,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:22,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:22,624 INFO L321 Elim1Store]: treesize reduction 432, result has 9.4 percent of original size [2022-11-25 22:18:22,625 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 [2022-11-25 22:18:22,928 INFO L321 Elim1Store]: treesize reduction 292, result has 20.0 percent of original size [2022-11-25 22:18:22,928 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 [2022-11-25 22:18:25,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:18:25,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:25,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:25,535 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:18:25,536 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 [2022-11-25 22:18:25,558 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:18:25,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:18:25,572 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 [2022-11-25 22:18:25,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:18:25,585 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 13 treesize of output 9 [2022-11-25 22:18:25,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:18:25,629 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 22:18:25,629 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 [2022-11-25 22:18:25,667 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:18:25,667 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 [2022-11-25 22:18:25,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,677 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 [2022-11-25 22:18:25,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,686 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 [2022-11-25 22:18:25,702 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 [2022-11-25 22:18:25,711 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 [2022-11-25 22:18:25,720 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 [2022-11-25 22:18:25,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:25,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:18:25,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:25,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 22:18:25,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:18:25,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:18:25,804 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 [2022-11-25 22:18:25,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:18:25,838 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 [2022-11-25 22:18:25,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:25,856 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:18:25,856 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 [2022-11-25 22:18:25,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:25,873 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:18:25,874 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 [2022-11-25 22:18:25,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:25,971 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:18:25,971 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 [2022-11-25 22:18:25,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:25,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:26,022 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-25 22:18:26,022 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 [2022-11-25 22:18:26,044 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 [2022-11-25 22:18:26,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-25 22:18:26,107 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:18:26,108 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 [2022-11-25 22:18:26,142 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-25 22:18:26,143 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 [2022-11-25 22:18:26,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:18:26,625 INFO L321 Elim1Store]: treesize reduction 107, result has 22.5 percent of original size [2022-11-25 22:18:26,625 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 [2022-11-25 22:18:26,648 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 [2022-11-25 22:18:26,703 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:18:26,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:18:26,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:18:26,814 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-25 22:18:26,814 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 [2022-11-25 22:18:26,971 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:18:26,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:18:27,010 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:18:27,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:18:27,045 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-25 22:18:27,046 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 [2022-11-25 22:18:27,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:27,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-25 22:18:27,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:27,182 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:18:27,183 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 [2022-11-25 22:18:27,211 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:18:27,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:18:27,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:27,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:18:27,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:18:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:27,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-25 22:18:27,241 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:18:32,797 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 [2022-11-25 22:18:32,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:18:32,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:18:32,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 24 [2022-11-25 22:18:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466925740] [2022-11-25 22:18:32,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:18:32,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 22:18:32,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:18:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 22:18:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2947, Unknown=2, NotChecked=0, Total=3192 [2022-11-25 22:18:32,801 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) [2022-11-25 22:18:33,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:18:33,904 INFO L93 Difference]: Finished difference Result 321 states and 409 transitions. [2022-11-25 22:18:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 22:18:33,905 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 [2022-11-25 22:18:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:18:33,906 INFO L225 Difference]: With dead ends: 321 [2022-11-25 22:18:33,906 INFO L226 Difference]: Without dead ends: 321 [2022-11-25 22:18:33,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=325, Invalid=3705, Unknown=2, NotChecked=0, Total=4032 [2022-11-25 22:18:33,909 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 93 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:18:33,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1648 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:18:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-25 22:18:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2022-11-25 22:18:33,914 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) [2022-11-25 22:18:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 405 transitions. [2022-11-25 22:18:33,915 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 405 transitions. Word has length 39 [2022-11-25 22:18:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:18:33,915 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 405 transitions. [2022-11-25 22:18:33,916 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) [2022-11-25 22:18:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 405 transitions. [2022-11-25 22:18:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 22:18:33,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:18:33,917 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] [2022-11-25 22:18:33,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:18:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-25 22:18:34,124 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)] === [2022-11-25 22:18:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:18:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2024368557, now seen corresponding path program 1 times [2022-11-25 22:18:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:18:34,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539619303] [2022-11-25 22:18:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:34,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:18:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:18:37,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:18:37,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539619303] [2022-11-25 22:18:37,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539619303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:18:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754377162] [2022-11-25 22:18:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:18:37,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:18:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:18:37,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:18:37,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a978efe-ef39-40b0-b245-648c5bcbd0b6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:18:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:18:37,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-25 22:18:37,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:18:37,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:18:37,367 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:18:37,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 22:18:37,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:18:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:37,483 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 [2022-11-25 22:18:37,573 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-25 22:18:37,573 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 [2022-11-25 22:18:37,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-25 22:18:37,671 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 [2022-11-25 22:18:37,705 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-25 22:18:37,705 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 [2022-11-25 22:18:37,801 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 [2022-11-25 22:18:37,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:37,908 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:18:37,908 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 [2022-11-25 22:18:37,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:18:38,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:38,117 INFO L321 Elim1Store]: treesize reduction 90, result has 36.6 percent of original size [2022-11-25 22:18:38,118 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 [2022-11-25 22:18:38,244 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 [2022-11-25 22:18:38,262 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-25 22:18:38,263 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 [2022-11-25 22:18:38,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:38,607 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 [2022-11-25 22:18:38,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:38,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:38,624 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-25 22:18:38,625 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 [2022-11-25 22:18:39,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:39,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:39,249 INFO L321 Elim1Store]: treesize reduction 44, result has 21.4 percent of original size [2022-11-25 22:18:39,249 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 [2022-11-25 22:18:39,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:39,276 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 [2022-11-25 22:18:39,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:39,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:39,877 INFO L321 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2022-11-25 22:18:39,878 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 [2022-11-25 22:18:39,889 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:18:39,889 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 [2022-11-25 22:18:40,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:40,124 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 [2022-11-25 22:18:40,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:18:40,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:18:40,470 INFO L321 Elim1Store]: treesize reduction 65, result has 9.7 percent of original size [2022-11-25 22:18:40,471 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 [2022-11-25 22:18:40,825 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-25 22:18:40,825 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 [2022-11-25 22:18:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:18:40,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:20:07,655 WARN L233 SmtUtils]: Spent 38.74s on a formula simplification. DAG size of input: 112 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:21:06,115 WARN L233 SmtUtils]: Spent 31.95s on a formula simplification. DAG size of input: 89 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:21:10,031 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:21:10,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 550 treesize of output 308 [2022-11-25 22:21:10,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:21:10,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:21:10,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:21:10,097 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 [2022-11-25 22:21:10,166 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 [2022-11-25 22:21:12,141 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