./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/split_list_test05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/split_list_test05-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 753b20bc59ec3e8b11fc0f1b54dadf2ece41f6cecc7eda05bde7d4413de53136 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:27:54,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:27:54,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:27:54,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:27:54,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:27:54,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:27:54,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:27:54,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:27:54,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:27:54,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:27:54,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:27:54,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:27:54,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:27:54,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:27:54,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:27:54,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:27:54,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:27:54,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:27:54,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:27:54,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:27:54,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:27:54,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:27:54,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:27:54,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:27:54,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:27:54,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:27:54,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:27:54,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:27:54,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:27:54,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:27:54,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:27:54,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:27:54,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:27:54,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:27:54,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:27:54,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:27:54,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:27:54,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:27:54,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:27:54,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:27:54,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:27:54,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 07:27:54,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:27:54,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:27:54,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:27:54,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:27:54,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:27:54,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:27:54,459 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:27:54,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:27:54,459 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:27:54,459 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:27:54,459 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:27:54,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:27:54,459 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:27:54,460 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:27:54,460 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:27:54,460 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:27:54,460 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:27:54,460 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:27:54,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 07:27:54,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 07:27:54,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:27:54,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:27:54,462 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:27:54,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:27:54,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:27:54,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:27:54,462 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 07:27:54,462 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 07:27:54,462 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 07:27:54,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:27:54,463 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:27:54,463 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:27:54,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:27:54,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:27:54,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:27:54,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:27:54,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:27:54,464 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:27:54,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:27:54,464 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:27:54,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:27:54,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:27:54,465 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_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 753b20bc59ec3e8b11fc0f1b54dadf2ece41f6cecc7eda05bde7d4413de53136 [2022-12-14 07:27:54,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:27:54,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:27:54,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:27:54,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:27:54,686 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:27:54,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/memsafety-ext2/split_list_test05-1.i [2022-12-14 07:27:57,216 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:27:57,410 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:27:57,411 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/sv-benchmarks/c/memsafety-ext2/split_list_test05-1.i [2022-12-14 07:27:57,420 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/data/be4fc072f/3e91c9d1160b4d86b4e7b83c9474fa3b/FLAG26a91cd1b [2022-12-14 07:27:57,791 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/data/be4fc072f/3e91c9d1160b4d86b4e7b83c9474fa3b [2022-12-14 07:27:57,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:27:57,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:27:57,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:27:57,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:27:57,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:27:57,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:27:57" (1/1) ... [2022-12-14 07:27:57,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2760e1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:57, skipping insertion in model container [2022-12-14 07:27:57,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:27:57" (1/1) ... [2022-12-14 07:27:57,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:27:57,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:27:58,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:27:58,021 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:27:58,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:27:58,072 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:27:58,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58 WrapperNode [2022-12-14 07:27:58,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:27:58,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:27:58,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:27:58,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:27:58,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,117 INFO L138 Inliner]: procedures = 125, calls = 94, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 304 [2022-12-14 07:27:58,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:27:58,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:27:58,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:27:58,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:27:58,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,143 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:27:58,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:27:58,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:27:58,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:27:58,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (1/1) ... [2022-12-14 07:27:58,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:27:58,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:27:58,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:27:58,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:27:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:27:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:27:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 07:27:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:27:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 07:27:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 07:27:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:27:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:27:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:27:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:27:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure append [2022-12-14 07:27:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2022-12-14 07:27:58,289 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:27:58,291 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:27:58,818 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:27:58,853 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:27:58,854 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-14 07:27:58,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:27:58 BoogieIcfgContainer [2022-12-14 07:27:58,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:27:58,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:27:58,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:27:58,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:27:58,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:27:57" (1/3) ... [2022-12-14 07:27:58,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec6da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:27:58, skipping insertion in model container [2022-12-14 07:27:58,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:27:58" (2/3) ... [2022-12-14 07:27:58,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec6da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:27:58, skipping insertion in model container [2022-12-14 07:27:58,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:27:58" (3/3) ... [2022-12-14 07:27:58,862 INFO L112 eAbstractionObserver]: Analyzing ICFG split_list_test05-1.i [2022-12-14 07:27:58,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:27:58,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2022-12-14 07:27:58,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:27:58,922 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;@347527d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:27:58,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2022-12-14 07:27:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 130 states have (on average 2.353846153846154) internal successors, (306), 279 states have internal predecessors, (306), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:27:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:27:58,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:27:58,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:27:58,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:27:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:27:58,935 INFO L85 PathProgramCache]: Analyzing trace with hash 17612, now seen corresponding path program 1 times [2022-12-14 07:27:58,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:27:58,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681913112] [2022-12-14 07:27:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:27:58,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:27:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:27:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:27:59,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:27:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681913112] [2022-12-14 07:27:59,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681913112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:27:59,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:27:59,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:27:59,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781094618] [2022-12-14 07:27:59,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:27:59,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:27:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:27:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:27:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:27:59,097 INFO L87 Difference]: Start difference. First operand has 293 states, 130 states have (on average 2.353846153846154) internal successors, (306), 279 states have internal predecessors, (306), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:27:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:27:59,469 INFO L93 Difference]: Finished difference Result 499 states and 552 transitions. [2022-12-14 07:27:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:27:59,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-12-14 07:27:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:27:59,479 INFO L225 Difference]: With dead ends: 499 [2022-12-14 07:27:59,479 INFO L226 Difference]: Without dead ends: 498 [2022-12-14 07:27:59,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:27:59,482 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 224 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:27:59,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 357 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:27:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-12-14 07:27:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 364. [2022-12-14 07:27:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 204 states have (on average 2.3186274509803924) internal successors, (473), 350 states have internal predecessors, (473), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:27:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 501 transitions. [2022-12-14 07:27:59,527 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 501 transitions. Word has length 2 [2022-12-14 07:27:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:27:59,527 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 501 transitions. [2022-12-14 07:27:59,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:27:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 501 transitions. [2022-12-14 07:27:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:27:59,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:27:59,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:27:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:27:59,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:27:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:27:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash 17613, now seen corresponding path program 1 times [2022-12-14 07:27:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:27:59,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530751291] [2022-12-14 07:27:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:27:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:27:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:27:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:27:59,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:27:59,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530751291] [2022-12-14 07:27:59,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530751291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:27:59,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:27:59,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:27:59,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915327552] [2022-12-14 07:27:59,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:27:59,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:27:59,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:27:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:27:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:27:59,586 INFO L87 Difference]: Start difference. First operand 364 states and 501 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:27:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:27:59,767 INFO L93 Difference]: Finished difference Result 365 states and 504 transitions. [2022-12-14 07:27:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:27:59,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-12-14 07:27:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:27:59,769 INFO L225 Difference]: With dead ends: 365 [2022-12-14 07:27:59,769 INFO L226 Difference]: Without dead ends: 365 [2022-12-14 07:27:59,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:27:59,771 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 5 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:27:59,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 454 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:27:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-12-14 07:27:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 362. [2022-12-14 07:27:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 204 states have (on average 2.3088235294117645) internal successors, (471), 348 states have internal predecessors, (471), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:27:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 499 transitions. [2022-12-14 07:27:59,790 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 499 transitions. Word has length 2 [2022-12-14 07:27:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:27:59,790 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 499 transitions. [2022-12-14 07:27:59,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:27:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 499 transitions. [2022-12-14 07:27:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:27:59,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:27:59,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:27:59,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:27:59,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting appendErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:27:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:27:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1077678403, now seen corresponding path program 1 times [2022-12-14 07:27:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:27:59,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211172437] [2022-12-14 07:27:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:27:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:27:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:27:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:27:59,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:27:59,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211172437] [2022-12-14 07:27:59,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211172437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:27:59,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:27:59,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:27:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889645659] [2022-12-14 07:27:59,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:27:59,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:27:59,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:27:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:27:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:27:59,876 INFO L87 Difference]: Start difference. First operand 362 states and 499 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:28:00,052 INFO L93 Difference]: Finished difference Result 357 states and 494 transitions. [2022-12-14 07:28:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:28:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 07:28:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:28:00,054 INFO L225 Difference]: With dead ends: 357 [2022-12-14 07:28:00,054 INFO L226 Difference]: Without dead ends: 357 [2022-12-14 07:28:00,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:28:00,056 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 39 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:28:00,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 405 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:28:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-12-14 07:28:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2022-12-14 07:28:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 204 states have (on average 2.284313725490196) internal successors, (466), 343 states have internal predecessors, (466), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:28:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 494 transitions. [2022-12-14 07:28:00,070 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 494 transitions. Word has length 8 [2022-12-14 07:28:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:28:00,071 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 494 transitions. [2022-12-14 07:28:00,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 494 transitions. [2022-12-14 07:28:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:28:00,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:28:00,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:28:00,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:28:00,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting appendErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:28:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:28:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1077678402, now seen corresponding path program 1 times [2022-12-14 07:28:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:28:00,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423282895] [2022-12-14 07:28:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:28:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:00,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:28:00,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423282895] [2022-12-14 07:28:00,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423282895] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:28:00,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:28:00,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:28:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778031466] [2022-12-14 07:28:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:28:00,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:28:00,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:28:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:28:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:28:00,150 INFO L87 Difference]: Start difference. First operand 357 states and 494 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:28:00,316 INFO L93 Difference]: Finished difference Result 352 states and 489 transitions. [2022-12-14 07:28:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:28:00,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 07:28:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:28:00,318 INFO L225 Difference]: With dead ends: 352 [2022-12-14 07:28:00,318 INFO L226 Difference]: Without dead ends: 352 [2022-12-14 07:28:00,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:28:00,320 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 34 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:28:00,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 416 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:28:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-12-14 07:28:00,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-12-14 07:28:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 204 states have (on average 2.2598039215686274) internal successors, (461), 338 states have internal predecessors, (461), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:28:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 489 transitions. [2022-12-14 07:28:00,332 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 489 transitions. Word has length 8 [2022-12-14 07:28:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:28:00,332 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 489 transitions. [2022-12-14 07:28:00,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 489 transitions. [2022-12-14 07:28:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:28:00,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:28:00,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:28:00,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:28:00,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:28:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:28:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash 951708300, now seen corresponding path program 1 times [2022-12-14 07:28:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:28:00,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78263847] [2022-12-14 07:28:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:28:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:00,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:28:00,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78263847] [2022-12-14 07:28:00,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78263847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:28:00,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:28:00,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:28:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009245204] [2022-12-14 07:28:00,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:28:00,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:28:00,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:28:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:28:00,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:28:00,486 INFO L87 Difference]: Start difference. First operand 352 states and 489 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:28:00,918 INFO L93 Difference]: Finished difference Result 475 states and 526 transitions. [2022-12-14 07:28:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:28:00,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 07:28:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:28:00,920 INFO L225 Difference]: With dead ends: 475 [2022-12-14 07:28:00,920 INFO L226 Difference]: Without dead ends: 475 [2022-12-14 07:28:00,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:28:00,921 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 288 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:28:00,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 642 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:28:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-12-14 07:28:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 344. [2022-12-14 07:28:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 204 states have (on average 2.2205882352941178) internal successors, (453), 330 states have internal predecessors, (453), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:28:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 481 transitions. [2022-12-14 07:28:00,932 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 481 transitions. Word has length 9 [2022-12-14 07:28:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:28:00,932 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 481 transitions. [2022-12-14 07:28:00,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 481 transitions. [2022-12-14 07:28:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:28:00,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:28:00,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:28:00,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:28:00,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:28:00,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:28:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 951708301, now seen corresponding path program 1 times [2022-12-14 07:28:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:28:00,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506376823] [2022-12-14 07:28:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:28:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:01,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:28:01,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506376823] [2022-12-14 07:28:01,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506376823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:28:01,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:28:01,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:28:01,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16430089] [2022-12-14 07:28:01,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:28:01,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:28:01,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:28:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:28:01,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:28:01,114 INFO L87 Difference]: Start difference. First operand 344 states and 481 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:28:01,659 INFO L93 Difference]: Finished difference Result 465 states and 516 transitions. [2022-12-14 07:28:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:28:01,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 07:28:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:28:01,661 INFO L225 Difference]: With dead ends: 465 [2022-12-14 07:28:01,661 INFO L226 Difference]: Without dead ends: 465 [2022-12-14 07:28:01,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:28:01,662 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 734 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:28:01,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 315 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 07:28:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-12-14 07:28:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 335. [2022-12-14 07:28:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 204 states have (on average 2.1715686274509802) internal successors, (443), 321 states have internal predecessors, (443), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:28:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 471 transitions. [2022-12-14 07:28:01,671 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 471 transitions. Word has length 9 [2022-12-14 07:28:01,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:28:01,672 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 471 transitions. [2022-12-14 07:28:01,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 471 transitions. [2022-12-14 07:28:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:28:01,672 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:28:01,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:28:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:28:01,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting appendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:28:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:28:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash 154666204, now seen corresponding path program 1 times [2022-12-14 07:28:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:28:01,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469728481] [2022-12-14 07:28:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:01,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:28:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:01,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:28:01,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469728481] [2022-12-14 07:28:01,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469728481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:28:01,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:28:01,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:28:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862030316] [2022-12-14 07:28:01,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:28:01,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:28:01,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:28:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:28:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:28:01,961 INFO L87 Difference]: Start difference. First operand 335 states and 471 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:28:02,267 INFO L93 Difference]: Finished difference Result 352 states and 491 transitions. [2022-12-14 07:28:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:28:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 07:28:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:28:02,269 INFO L225 Difference]: With dead ends: 352 [2022-12-14 07:28:02,269 INFO L226 Difference]: Without dead ends: 352 [2022-12-14 07:28:02,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:28:02,270 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 20 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:28:02,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1019 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:28:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-12-14 07:28:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 342. [2022-12-14 07:28:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 2.142857142857143) internal successors, (450), 327 states have internal predecessors, (450), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 07:28:02,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 480 transitions. [2022-12-14 07:28:02,279 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 480 transitions. Word has length 16 [2022-12-14 07:28:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:28:02,280 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 480 transitions. [2022-12-14 07:28:02,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 480 transitions. [2022-12-14 07:28:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 07:28:02,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:28:02,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:28:02,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:28:02,281 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting appendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:28:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:28:02,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1826037305, now seen corresponding path program 1 times [2022-12-14 07:28:02,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:28:02,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053434311] [2022-12-14 07:28:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:02,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:28:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:02,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:28:02,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053434311] [2022-12-14 07:28:02,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053434311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:28:02,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:28:02,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 07:28:02,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357960293] [2022-12-14 07:28:02,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:28:02,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:28:02,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:28:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:28:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:28:02,620 INFO L87 Difference]: Start difference. First operand 342 states and 480 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:28:03,235 INFO L93 Difference]: Finished difference Result 476 states and 529 transitions. [2022-12-14 07:28:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:28:03,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 07:28:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:28:03,238 INFO L225 Difference]: With dead ends: 476 [2022-12-14 07:28:03,238 INFO L226 Difference]: Without dead ends: 476 [2022-12-14 07:28:03,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:28:03,239 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 686 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:28:03,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1013 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:28:03,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-12-14 07:28:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 344. [2022-12-14 07:28:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 212 states have (on average 2.1320754716981134) internal successors, (452), 329 states have internal predecessors, (452), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 07:28:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 482 transitions. [2022-12-14 07:28:03,248 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 482 transitions. Word has length 17 [2022-12-14 07:28:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:28:03,248 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 482 transitions. [2022-12-14 07:28:03,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:28:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 482 transitions. [2022-12-14 07:28:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 07:28:03,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:28:03,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:28:03,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:28:03,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting appendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:28:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:28:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash -809293204, now seen corresponding path program 1 times [2022-12-14 07:28:03,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:28:03,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947105287] [2022-12-14 07:28:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:28:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:04,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:28:04,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947105287] [2022-12-14 07:28:04,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947105287] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:28:04,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349061923] [2022-12-14 07:28:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:04,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:28:04,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:28:04,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:28:04,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:28:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:04,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 07:28:04,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:28:04,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:28:04,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 07:28:04,377 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:28:04,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-14 07:28:04,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 07:28:04,431 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:28:04,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-12-14 07:28:04,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:28:04,500 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-12-14 07:28:04,501 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 29 treesize of output 28 [2022-12-14 07:28:04,629 INFO L321 Elim1Store]: treesize reduction 54, result has 36.5 percent of original size [2022-12-14 07:28:04,630 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 28 treesize of output 45 [2022-12-14 07:28:04,693 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 38 treesize of output 36 [2022-12-14 07:28:04,830 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 38 treesize of output 36 [2022-12-14 07:28:04,855 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 38 treesize of output 36 [2022-12-14 07:28:04,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:28:04,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-14 07:28:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:04,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:28:04,974 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_291 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_append_~node~0.base v_ArrVal_291) c_append_~head.base) (+ c_append_~head.offset 4))) 1)) is different from false [2022-12-14 07:28:05,218 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:05,219 INFO L350 Elim1Store]: Elim1 eliminated variable 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 33 treesize of output 34 [2022-12-14 07:28:05,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:05,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 214 [2022-12-14 07:28:05,240 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 182 treesize of output 174 [2022-12-14 07:28:05,247 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 174 treesize of output 158 [2022-12-14 07:28:05,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349061923] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:28:05,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1158305767] [2022-12-14 07:28:05,568 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 07:28:05,568 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:28:05,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:28:05,576 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:28:05,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:28:05,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 07:28:05,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:28:05,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:28:05,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 07:28:05,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:28:05,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 07:28:05,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:28:05,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 07:28:05,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:28:05,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:28:05,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:28:05,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:28:05,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:28:05,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:28:05,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:28:05,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:28:05,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:28:05,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:05,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:28:05,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,810 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 07:28:05,810 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 30 treesize of output 32 [2022-12-14 07:28:05,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,832 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 07:28:05,833 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 30 treesize of output 42 [2022-12-14 07:28:05,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:05,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:05,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,870 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-12-14 07:28:05,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 44 [2022-12-14 07:28:05,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:05,908 INFO L321 Elim1Store]: treesize reduction 52, result has 41.6 percent of original size [2022-12-14 07:28:05,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 74 [2022-12-14 07:28:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-14 07:28:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,015 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 17 treesize of output 7 [2022-12-14 07:28:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,021 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 17 treesize of output 7 [2022-12-14 07:28:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:28:06,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2022-12-14 07:28:06,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,094 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 17 treesize of output 7 [2022-12-14 07:28:06,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,167 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 17 treesize of output 7 [2022-12-14 07:28:06,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-14 07:28:06,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:28:06,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2022-12-14 07:28:06,249 INFO L197 IcfgInterpreter]: Interpreting procedure append with input of size 91 for LOIs [2022-12-14 07:28:06,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:06,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,561 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 19 [2022-12-14 07:28:06,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,568 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 19 [2022-12-14 07:28:06,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,583 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:06,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-12-14 07:28:06,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:06,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:06,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-12-14 07:28:06,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:28:06,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:28:06,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:28:06,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:28:06,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:06,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:28:06,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:06,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 07:28:06,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 07:28:06,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:28:06,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:06,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-12-14 07:28:06,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:06,710 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:06,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-12-14 07:28:06,718 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:28:09,626 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6654#(and (= (select (select |#memory_$Pointer$.base| append_~node~0.base) (+ 5 append_~node~0.offset)) 0) (<= 0 (+ append_~input 128)) (= append_~node~0.offset 0) (<= 0 (+ 128 |append_#in~input|)) (= (select (select |#memory_$Pointer$.base| append_~node~0.base) (+ append_~node~0.offset 1)) (select (select |#memory_$Pointer$.base| append_~head.base) (+ append_~head.offset 4))) (<= (+ 8 append_~head.offset) (select |#length| append_~head.base)) (<= append_~head.offset 0) (= (select (select |#memory_$Pointer$.offset| append_~node~0.base) (+ 5 append_~node~0.offset)) 0) (= (select (select |#memory_$Pointer$.offset| append_~head.base) (+ append_~head.offset 4)) |append_#t~mem60.offset|) (<= 0 append_~head.offset) (= |append_#in~head.offset| 0) (= (select (select |#memory_$Pointer$.offset| append_~node~0.base) (+ append_~node~0.offset 1)) (select (select |#memory_$Pointer$.offset| append_~head.base) (+ append_~head.offset 4))) (= |#NULL.offset| 0) (= (select |#valid| append_~head.base) 1) (= (select |#valid| append_~node~0.base) 1) (not (= (select |#valid| |append_#t~mem60.base|) 1)) (<= append_~input 127) (<= |append_#in~input| 127) (= |append_#t~mem60.base| (select (select |#memory_$Pointer$.base| append_~head.base) (+ append_~head.offset 4))) (<= 0 |#StackHeapBarrier|) (<= (+ 9 append_~node~0.offset) (select |#length| append_~node~0.base)) (= |#NULL.base| 0))' at error location [2022-12-14 07:28:09,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:28:09,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 07:28:09,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-12-14 07:28:09,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651282710] [2022-12-14 07:28:09,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 07:28:09,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 07:28:09,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:28:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 07:28:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2632, Unknown=1, NotChecked=104, Total=2970 [2022-12-14 07:28:09,630 INFO L87 Difference]: Start difference. First operand 344 states and 482 transitions. Second operand has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:28:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:28:11,504 INFO L93 Difference]: Finished difference Result 479 states and 531 transitions. [2022-12-14 07:28:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:28:11,504 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-12-14 07:28:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:28:11,505 INFO L225 Difference]: With dead ends: 479 [2022-12-14 07:28:11,505 INFO L226 Difference]: Without dead ends: 479 [2022-12-14 07:28:11,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=352, Invalid=3433, Unknown=1, NotChecked=120, Total=3906 [2022-12-14 07:28:11,506 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 797 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 2949 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:28:11,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 2337 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2949 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 07:28:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-12-14 07:28:11,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 349. [2022-12-14 07:28:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 217 states have (on average 2.1013824884792625) internal successors, (456), 334 states have internal predecessors, (456), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 07:28:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 486 transitions. [2022-12-14 07:28:11,513 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 486 transitions. Word has length 31 [2022-12-14 07:28:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:28:11,513 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 486 transitions. [2022-12-14 07:28:11,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:28:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 486 transitions. [2022-12-14 07:28:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 07:28:11,513 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:28:11,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:28:11,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:28:11,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 07:28:11,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:28:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:28:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash -809293203, now seen corresponding path program 1 times [2022-12-14 07:28:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:28:11,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195514109] [2022-12-14 07:28:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:11,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:28:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:13,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:28:13,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195514109] [2022-12-14 07:28:13,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195514109] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:28:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67960336] [2022-12-14 07:28:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:28:13,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:28:13,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:28:13,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:28:13,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:28:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:28:13,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-14 07:28:13,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:28:13,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:28:13,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 07:28:13,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 07:28:13,458 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:28:13,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-14 07:28:13,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 07:28:13,472 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:28:13,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-14 07:28:13,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 07:28:13,538 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:28:13,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-12-14 07:28:13,550 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:28:13,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-12-14 07:28:13,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:28:13,675 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-12-14 07:28:13,675 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 29 treesize of output 28 [2022-12-14 07:28:13,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:28:13,817 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 26 treesize of output 28 [2022-12-14 07:28:13,829 INFO L321 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-12-14 07:28:13,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 24 [2022-12-14 07:28:13,891 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 44 [2022-12-14 07:28:13,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2022-12-14 07:28:14,035 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 44 [2022-12-14 07:28:14,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2022-12-14 07:28:14,065 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 44 [2022-12-14 07:28:14,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2022-12-14 07:28:14,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:28:14,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-12-14 07:28:14,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:28:14,141 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2022-12-14 07:28:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:28:14,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:28:16,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:16,174 INFO L350 Elim1Store]: Elim1 eliminated variable 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 116 treesize of output 117 [2022-12-14 07:28:16,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:16,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 127 [2022-12-14 07:28:16,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:16,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 495 treesize of output 359 [2022-12-14 07:28:16,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:16,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 996 treesize of output 954 [2022-12-14 07:28:16,255 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:16,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1598 treesize of output 1508 [2022-12-14 07:28:16,272 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 1429 treesize of output 1301 [2022-12-14 07:28:16,298 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:28:16,298 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 1301 treesize of output 1242 [2022-12-14 07:28:16,315 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 1274 treesize of output 1134 [2022-12-14 07:28:16,333 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 1142 treesize of output 1066 [2022-12-14 07:28:16,357 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 1041 treesize of output 1033 [2022-12-14 07:29:48,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67960336] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:29:48,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1094901262] [2022-12-14 07:29:48,116 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 07:29:48,116 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:29:48,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:29:48,116 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:29:48,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:29:48,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 07:29:48,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 07:29:48,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:29:48,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:29:48,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 07:29:48,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:29:48,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:29:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 07:29:48,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:29:48,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:29:48,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:29:48,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:29:48,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:29:48,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:29:48,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:29:48,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:29:48,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:29:48,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:29:48,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,289 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 07:29:48,289 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 30 treesize of output 42 [2022-12-14 07:29:48,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,308 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 07:29:48,308 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 30 treesize of output 32 [2022-12-14 07:29:48,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,334 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-12-14 07:29:48,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 44 [2022-12-14 07:29:48,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,367 INFO L321 Elim1Store]: treesize reduction 52, result has 41.6 percent of original size [2022-12-14 07:29:48,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 74 [2022-12-14 07:29:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-14 07:29:48,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,448 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 17 treesize of output 7 [2022-12-14 07:29:48,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,453 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 17 treesize of output 7 [2022-12-14 07:29:48,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 07:29:48,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,527 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 17 treesize of output 7 [2022-12-14 07:29:48,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-14 07:29:48,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,537 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 17 treesize of output 7 [2022-12-14 07:29:48,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:29:48,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2022-12-14 07:29:48,581 INFO L197 IcfgInterpreter]: Interpreting procedure append with input of size 94 for LOIs [2022-12-14 07:29:48,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-12-14 07:29:48,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,825 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 19 [2022-12-14 07:29:48,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,837 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:29:48,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-12-14 07:29:48,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:29:48,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-12-14 07:29:48,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:29:48,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:29:48,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:29:48,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:29:48,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:29:48,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 07:29:48,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 07:29:48,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:29:48,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-12-14 07:29:48,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:29:48,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:29:48,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:29:48,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-12-14 07:29:48,943 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:29:52,409 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7691#(and (= (select (select |#memory_$Pointer$.base| append_~node~0.base) (+ 5 append_~node~0.offset)) 0) (<= 0 (+ append_~input 128)) (= append_~node~0.offset 0) (<= 0 (+ 128 |append_#in~input|)) (= (select (select |#memory_$Pointer$.base| append_~node~0.base) (+ append_~node~0.offset 1)) (select (select |#memory_$Pointer$.base| append_~head.base) (+ append_~head.offset 4))) (<= (+ 8 append_~head.offset) (select |#length| append_~head.base)) (<= append_~head.offset 0) (= (select (select |#memory_$Pointer$.offset| append_~node~0.base) (+ 5 append_~node~0.offset)) 0) (= (select (select |#memory_$Pointer$.offset| append_~head.base) (+ append_~head.offset 4)) |append_#t~mem60.offset|) (<= 0 append_~head.offset) (= |append_#in~head.offset| 0) (= (select (select |#memory_$Pointer$.offset| append_~node~0.base) (+ append_~node~0.offset 1)) (select (select |#memory_$Pointer$.offset| append_~head.base) (+ append_~head.offset 4))) (or (not (<= (+ |append_#t~mem60.offset| 9) (select |#length| |append_#t~mem60.base|))) (not (<= 0 (+ |append_#t~mem60.offset| 5)))) (= |#NULL.offset| 0) (= (select |#valid| append_~head.base) 1) (= (select |#valid| append_~node~0.base) 1) (<= append_~input 127) (<= |append_#in~input| 127) (= |append_#t~mem60.base| (select (select |#memory_$Pointer$.base| append_~head.base) (+ append_~head.offset 4))) (<= 0 |#StackHeapBarrier|) (<= (+ 9 append_~node~0.offset) (select |#length| append_~node~0.base)) (= |#NULL.base| 0))' at error location [2022-12-14 07:29:52,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:29:52,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 07:29:52,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 30 [2022-12-14 07:29:52,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642243610] [2022-12-14 07:29:52,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 07:29:52,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 07:29:52,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:29:52,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 07:29:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3403, Unknown=15, NotChecked=0, Total=3660 [2022-12-14 07:29:52,412 INFO L87 Difference]: Start difference. First operand 349 states and 486 transitions. Second operand has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 27 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:29:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:29:58,762 INFO L93 Difference]: Finished difference Result 746 states and 863 transitions. [2022-12-14 07:29:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 07:29:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 27 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-12-14 07:29:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:29:58,765 INFO L225 Difference]: With dead ends: 746 [2022-12-14 07:29:58,765 INFO L226 Difference]: Without dead ends: 746 [2022-12-14 07:29:58,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=598, Invalid=5867, Unknown=15, NotChecked=0, Total=6480 [2022-12-14 07:29:58,767 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1269 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 6445 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 6737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 6445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:29:58,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 2331 Invalid, 6737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 6445 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-14 07:29:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-12-14 07:29:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 394. [2022-12-14 07:29:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 246 states have (on average 2.0040650406504064) internal successors, (493), 366 states have internal predecessors, (493), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (57), 28 states have call predecessors, (57), 29 states have call successors, (57) [2022-12-14 07:29:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 579 transitions. [2022-12-14 07:29:58,778 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 579 transitions. Word has length 31 [2022-12-14 07:29:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:29:58,778 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 579 transitions. [2022-12-14 07:29:58,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 27 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:29:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 579 transitions. [2022-12-14 07:29:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 07:29:58,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:29:58,779 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:29:58,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:29:58,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 07:29:58,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 144 more)] === [2022-12-14 07:29:58,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:29:58,982 INFO L85 PathProgramCache]: Analyzing trace with hash -991186486, now seen corresponding path program 1 times [2022-12-14 07:29:58,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:29:58,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946431284] [2022-12-14 07:29:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:29:58,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:29:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:29:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:29:59,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:29:59,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946431284] [2022-12-14 07:29:59,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946431284] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:29:59,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103640350] [2022-12-14 07:29:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:29:59,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:29:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:29:59,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:29:59,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109e74a2-ebdc-40cd-84ff-45020c4341e5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:29:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:29:59,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-14 07:29:59,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:29:59,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:30:00,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 07:30:00,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 07:30:00,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:00,123 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 26 treesize of output 28 [2022-12-14 07:30:00,134 INFO L321 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-12-14 07:30:00,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 07:30:00,175 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 36 treesize of output 36 [2022-12-14 07:30:00,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2022-12-14 07:30:00,256 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 36 treesize of output 36 [2022-12-14 07:30:00,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2022-12-14 07:30:00,273 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 36 treesize of output 36 [2022-12-14 07:30:00,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2022-12-14 07:30:00,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:30:00,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 07:30:00,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:30:00,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:00,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 17 [2022-12-14 07:30:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:30:00,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:30:04,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:04,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 108 [2022-12-14 07:30:04,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:04,803 INFO L350 Elim1Store]: Elim1 eliminated variable 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 109 treesize of output 100 [2022-12-14 07:30:04,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:04,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 132 [2022-12-14 07:30:04,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:04,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 186 treesize of output 180 [2022-12-14 07:30:04,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:04,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 238 [2022-12-14 07:30:04,856 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 199 treesize of output 183 [2022-12-14 07:30:04,864 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 208 treesize of output 184 [2022-12-14 07:30:04,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:04,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 201 [2022-12-14 07:30:04,892 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 163 treesize of output 159 [2022-12-14 07:30:05,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:05,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-12-14 07:30:05,248 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:05,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2022-12-14 07:30:05,252 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 13 treesize of output 9 [2022-12-14 07:30:05,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:05,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2022-12-14 07:30:05,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:05,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2022-12-14 07:30:05,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:30:05,306 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:05,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-12-14 07:30:05,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:30:05,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:30:05,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-14 07:30:05,514 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 107 treesize of output 103 [2022-12-14 07:30:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:30:05,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103640350] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:30:05,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798928079] [2022-12-14 07:30:05,974 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-12-14 07:30:05,974 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:30:05,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:30:05,974 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:30:05,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:30:05,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:05,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:05,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 07:30:05,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:30:06,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:30:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 07:30:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 07:30:06,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:30:06,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:30:06,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:30:06,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2022-12-14 07:30:06,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:30:06,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:30:06,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:30:06,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:30:06,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:30:06,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,104 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 19 [2022-12-14 07:30:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,110 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 19 [2022-12-14 07:30:06,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:30:06,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,131 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-14 07:30:06,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 41 [2022-12-14 07:30:06,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:30:06,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,152 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-14 07:30:06,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 41 [2022-12-14 07:30:06,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,222 INFO L321 Elim1Store]: treesize reduction 92, result has 43.9 percent of original size [2022-12-14 07:30:06,223 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 5 case distinctions, treesize of input 176 treesize of output 174 [2022-12-14 07:30:06,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,266 INFO L321 Elim1Store]: treesize reduction 84, result has 36.4 percent of original size [2022-12-14 07:30:06,267 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 5 case distinctions, treesize of input 172 treesize of output 152 [2022-12-14 07:30:06,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:30:06,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,603 INFO L321 Elim1Store]: treesize reduction 414, result has 25.7 percent of original size [2022-12-14 07:30:06,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 1051 treesize of output 813 [2022-12-14 07:30:06,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:30:06,810 INFO L321 Elim1Store]: treesize reduction 338, result has 31.2 percent of original size [2022-12-14 07:30:06,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 774 treesize of output 696 [2022-12-14 07:34:51,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:34:53,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:34:53,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:34:53,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 07:34:53,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:34:53,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 07:34:53,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:34:53,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:34:53,677 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 07:34:53,677 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 30 treesize of output 32 [2022-12-14 07:34:53,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:34:53,693 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 07:34:53,693 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 30 treesize of output 42 [2022-12-14 07:34:53,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:34:53,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:34:53,719 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-12-14 07:34:53,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 44 [2022-12-14 07:34:53,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:34:53,749 INFO L321 Elim1Store]: treesize reduction 52, result has 41.6 percent of original size [2022-12-14 07:34:53,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 74 [2022-12-14 07:34:53,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 07:34:55,787 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:34:55,788 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,790 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:34:55,791 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:34:55,794 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,794 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,795 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,795 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:34:55,809 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,810 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,837 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,850 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,850 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,851 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,852 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,852 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,865 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,881 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,881 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,886 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,931 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,932 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:55,933 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,933 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,933 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,979 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:55,979 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:58,942 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:59,023 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:59,592 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:59,592 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:34:59,593 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:59,594 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:34:59,932 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:00,174 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:35:01,788 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:01,788 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:35:01,789 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:35:01,790 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:35:01,790 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,790 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,792 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,792 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,792 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,793 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,795 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:01,862 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:35:01,863 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:01,864 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,864 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,866 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,942 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,943 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,943 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:01,945 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:02,069 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7574 conjuctions. This might take some time... [2022-12-14 07:35:03,701 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 3246 conjuctions. [2022-12-14 07:35:04,391 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7146 conjuctions. This might take some time... [2022-12-14 07:35:06,586 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 4764 conjuctions. [2022-12-14 07:35:06,602 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:06,607 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:06,607 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:35:06,607 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:06,608 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:06,609 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2022-12-14 07:35:06,689 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 24488 conjuctions. This might take some time... [2022-12-14 07:35:43,246 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 24488 conjuctions. [2022-12-14 07:35:43,326 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:43,327 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:43,328 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:43,329 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:44,533 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:44,559 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 8946 conjuctions. This might take some time... [2022-12-14 07:35:46,463 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 2982 conjuctions. [2022-12-14 07:35:47,187 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:48,345 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:48,347 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:48,347 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:48,348 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:48,349 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:48,349 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:48,354 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:35:48,392 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:49,981 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:49,997 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:49,998 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:35:50,138 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5330 conjuctions. This might take some time... [2022-12-14 07:35:52,157 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 5330 conjuctions. [2022-12-14 07:35:52,184 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:35:52,220 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13796 conjuctions. This might take some time... [2022-12-14 07:36:05,088 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 13796 conjuctions. [2022-12-14 07:36:05,246 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 34942 conjuctions. This might take some time... [2022-12-14 07:39:45,005 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 34942 conjuctions. [2022-12-14 07:39:48,199 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:48,200 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,202 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:48,203 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:48,206 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,206 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,207 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,208 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:48,223 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,223 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,248 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,259 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,260 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,260 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,261 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,261 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,271 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,283 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,283 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,287 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,331 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,331 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:48,332 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,332 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,333 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,376 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:48,377 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:51,318 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:51,398 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:51,947 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:51,947 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:51,948 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:51,948 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:52,278 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:52,510 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:54,250 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:54,250 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:54,251 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:54,252 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:54,252 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,253 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,254 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,254 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,254 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,255 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,257 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:54,321 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:54,321 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:54,322 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,323 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,325 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,401 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,402 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,402 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:54,404 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:54,527 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7574 conjuctions. This might take some time... [2022-12-14 07:39:56,198 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 3246 conjuctions. [2022-12-14 07:39:56,976 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7146 conjuctions. This might take some time... [2022-12-14 07:39:59,348 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 4764 conjuctions. [2022-12-14 07:39:59,363 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:59,368 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:59,369 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:39:59,369 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:39:59,370 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:39:59,371 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2022-12-14 07:39:59,450 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 24488 conjuctions. This might take some time... [2022-12-14 07:40:35,840 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 24488 conjuctions. [2022-12-14 07:40:35,919 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:40:35,920 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:35,921 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:35,922 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:40:37,116 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:37,141 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 8946 conjuctions. This might take some time... [2022-12-14 07:40:39,051 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 2982 conjuctions. [2022-12-14 07:40:39,780 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:40,878 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:40,880 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:40,881 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:40,881 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:40,882 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:40,882 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:40:40,888 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-12-14 07:40:40,925 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:42,513 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:42,529 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:42,530 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 07:40:42,670 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5330 conjuctions. This might take some time... [2022-12-14 07:40:44,695 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 5330 conjuctions. [2022-12-14 07:40:44,721 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2022-12-14 07:40:44,751 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13796 conjuctions. This might take some time... [2022-12-14 07:40:57,599 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 13796 conjuctions. [2022-12-14 07:40:57,786 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 34942 conjuctions. This might take some time...