./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI --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 71fe950642bac282d48da6f500677ae534e71a907f9a56d9941372cc95f40daa --- 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-5e519f3 [2022-11-03 03:51:43,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:51:43,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:51:44,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:51:44,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:51:44,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:51:44,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:51:44,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:51:44,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:51:44,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:51:44,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:51:44,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:51:44,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:51:44,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:51:44,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:51:44,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:51:44,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:51:44,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:51:44,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:51:44,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:51:44,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:51:44,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:51:44,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:51:44,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:51:44,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:51:44,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:51:44,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:51:44,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:51:44,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:51:44,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:51:44,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:51:44,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:51:44,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:51:44,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:51:44,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:51:44,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:51:44,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:51:44,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:51:44,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:51:44,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:51:44,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:51:44,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 03:51:44,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:51:44,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:51:44,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:51:44,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:51:44,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:51:44,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:51:44,151 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:51:44,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:51:44,151 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:51:44,151 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:51:44,153 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:51:44,153 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:51:44,153 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:51:44,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:51:44,154 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:51:44,154 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:51:44,154 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:51:44,154 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:51:44,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 03:51:44,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 03:51:44,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:51:44,156 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:51:44,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:51:44,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:51:44,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:51:44,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:51:44,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 03:51:44,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 03:51:44,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 03:51:44,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:51:44,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:51:44,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:51:44,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:51:44,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:51:44,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:51:44,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:44,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:51:44,160 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:51:44,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:51:44,160 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:51:44,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:51:44,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:51:44,161 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_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71fe950642bac282d48da6f500677ae534e71a907f9a56d9941372cc95f40daa [2022-11-03 03:51:44,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:51:44,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:51:44,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:51:44,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:51:44,522 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:51:44,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i [2022-11-03 03:51:44,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/data/2df408580/ba018a40456145a99c4905b4df82d804/FLAG96206123a [2022-11-03 03:51:45,168 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:51:45,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i [2022-11-03 03:51:45,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/data/2df408580/ba018a40456145a99c4905b4df82d804/FLAG96206123a [2022-11-03 03:51:45,440 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/data/2df408580/ba018a40456145a99c4905b4df82d804 [2022-11-03 03:51:45,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:51:45,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:51:45,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:45,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:51:45,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:51:45,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:45,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f67f2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45, skipping insertion in model container [2022-11-03 03:51:45,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:45,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:51:45,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:51:45,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i[24175,24188] [2022-11-03 03:51:45,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:45,908 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:51:45,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i[24175,24188] [2022-11-03 03:51:45,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:45,977 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:51:45,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45 WrapperNode [2022-11-03 03:51:45,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:45,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:45,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:51:45,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:51:45,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,034 INFO L138 Inliner]: procedures = 122, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-11-03 03:51:46,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:46,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:51:46,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:51:46,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:51:46,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,097 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:51:46,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:51:46,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:51:46,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:51:46,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (1/1) ... [2022-11-03 03:51:46,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:46,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:46,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:51:46,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:51:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-03 03:51:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-03 03:51:46,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:51:46,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:51:46,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:51:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:51:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:51:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:51:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:51:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:51:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:51:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:51:46,370 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:51:46,372 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:51:46,446 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-03 03:51:46,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:51:46,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:51:46,873 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 03:51:46,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:46 BoogieIcfgContainer [2022-11-03 03:51:46,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:51:46,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:51:46,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:51:46,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:51:46,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:51:45" (1/3) ... [2022-11-03 03:51:46,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1923a19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:46, skipping insertion in model container [2022-11-03 03:51:46,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:45" (2/3) ... [2022-11-03 03:51:46,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1923a19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:46, skipping insertion in model container [2022-11-03 03:51:46,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:46" (3/3) ... [2022-11-03 03:51:46,893 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-1.i [2022-11-03 03:51:46,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:51:46,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-03 03:51:46,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:51:46,997 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;@61c0ad6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:51:46,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-03 03:51:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 03:51:47,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:47,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 03:51:47,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:47,023 INFO L85 PathProgramCache]: Analyzing trace with hash 166672, now seen corresponding path program 1 times [2022-11-03 03:51:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:47,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524063788] [2022-11-03 03:51:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:47,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:47,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:47,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524063788] [2022-11-03 03:51:47,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524063788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:47,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:47,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:51:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281138193] [2022-11-03 03:51:47,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:47,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:47,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:47,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:47,455 INFO L87 Difference]: Start difference. First operand has 66 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:47,637 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-11-03 03:51:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:47,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-03 03:51:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:47,649 INFO L225 Difference]: With dead ends: 80 [2022-11-03 03:51:47,649 INFO L226 Difference]: Without dead ends: 74 [2022-11-03 03:51:47,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:47,657 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:47,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 46 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-03 03:51:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2022-11-03 03:51:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 2.103448275862069) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-11-03 03:51:47,711 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 3 [2022-11-03 03:51:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:47,711 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-11-03 03:51:47,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-11-03 03:51:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 03:51:47,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:47,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 03:51:47,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:51:47,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash 166673, now seen corresponding path program 1 times [2022-11-03 03:51:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:47,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582508104] [2022-11-03 03:51:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:47,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:47,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582508104] [2022-11-03 03:51:47,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582508104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:47,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:47,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:51:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265245392] [2022-11-03 03:51:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:47,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:47,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:47,920 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:47,995 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-11-03 03:51:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-03 03:51:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:47,997 INFO L225 Difference]: With dead ends: 53 [2022-11-03 03:51:47,998 INFO L226 Difference]: Without dead ends: 53 [2022-11-03 03:51:47,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:47,999 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:48,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-03 03:51:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-03 03:51:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-11-03 03:51:48,006 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 3 [2022-11-03 03:51:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:48,007 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-11-03 03:51:48,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-11-03 03:51:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:51:48,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:48,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:48,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:51:48,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:48,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:48,017 INFO L85 PathProgramCache]: Analyzing trace with hash -38731617, now seen corresponding path program 1 times [2022-11-03 03:51:48,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:48,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930380145] [2022-11-03 03:51:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:48,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:48,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930380145] [2022-11-03 03:51:48,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930380145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:48,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:48,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:51:48,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714190683] [2022-11-03 03:51:48,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:48,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:48,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:48,182 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:48,295 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2022-11-03 03:51:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:48,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:51:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:48,298 INFO L225 Difference]: With dead ends: 87 [2022-11-03 03:51:48,298 INFO L226 Difference]: Without dead ends: 87 [2022-11-03 03:51:48,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:48,300 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 44 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:48,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 83 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-03 03:51:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 51. [2022-11-03 03:51:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-11-03 03:51:48,309 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 8 [2022-11-03 03:51:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:48,309 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-11-03 03:51:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-11-03 03:51:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:51:48,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:48,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:48,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:51:48,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash -38731616, now seen corresponding path program 1 times [2022-11-03 03:51:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:48,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672463481] [2022-11-03 03:51:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:48,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:48,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672463481] [2022-11-03 03:51:48,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672463481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:48,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:48,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:51:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117151132] [2022-11-03 03:51:48,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:48,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:48,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:48,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:48,442 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:48,530 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2022-11-03 03:51:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:51:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:48,532 INFO L225 Difference]: With dead ends: 87 [2022-11-03 03:51:48,532 INFO L226 Difference]: Without dead ends: 87 [2022-11-03 03:51:48,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:48,535 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:48,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 92 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-03 03:51:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 49. [2022-11-03 03:51:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-11-03 03:51:48,542 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 8 [2022-11-03 03:51:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:48,542 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-11-03 03:51:48,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-11-03 03:51:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:51:48,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:48,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:48,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:51:48,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -38623504, now seen corresponding path program 1 times [2022-11-03 03:51:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:48,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602916845] [2022-11-03 03:51:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:48,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:48,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602916845] [2022-11-03 03:51:48,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602916845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:48,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:48,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:51:48,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057678250] [2022-11-03 03:51:48,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:48,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:48,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:48,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:48,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:48,630 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:48,659 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-11-03 03:51:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:51:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:48,661 INFO L225 Difference]: With dead ends: 56 [2022-11-03 03:51:48,661 INFO L226 Difference]: Without dead ends: 56 [2022-11-03 03:51:48,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:48,663 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:48,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:51:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-03 03:51:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2022-11-03 03:51:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.8) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-03 03:51:48,671 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 8 [2022-11-03 03:51:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:48,672 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-03 03:51:48,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-03 03:51:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:51:48,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:48,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:48,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:51:48,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:48,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1433622178, now seen corresponding path program 1 times [2022-11-03 03:51:48,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:48,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536919565] [2022-11-03 03:51:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:48,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:48,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536919565] [2022-11-03 03:51:48,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536919565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:48,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:48,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471634984] [2022-11-03 03:51:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:48,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:48,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:48,891 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:49,020 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2022-11-03 03:51:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:51:49,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 03:51:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:49,022 INFO L225 Difference]: With dead ends: 72 [2022-11-03 03:51:49,022 INFO L226 Difference]: Without dead ends: 72 [2022-11-03 03:51:49,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:49,023 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 122 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:49,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 48 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-03 03:51:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-11-03 03:51:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2022-11-03 03:51:49,029 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 10 [2022-11-03 03:51:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:49,030 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2022-11-03 03:51:49,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2022-11-03 03:51:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:51:49,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:49,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:51:49,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1433622179, now seen corresponding path program 1 times [2022-11-03 03:51:49,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:49,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040934140] [2022-11-03 03:51:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:49,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:49,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040934140] [2022-11-03 03:51:49,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040934140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:49,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:49,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239598128] [2022-11-03 03:51:49,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:51:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:51:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:51:49,390 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:49,540 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-11-03 03:51:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:51:49,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 03:51:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:49,542 INFO L225 Difference]: With dead ends: 71 [2022-11-03 03:51:49,542 INFO L226 Difference]: Without dead ends: 71 [2022-11-03 03:51:49,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:51:49,545 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 120 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:49,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 43 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-03 03:51:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2022-11-03 03:51:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-11-03 03:51:49,564 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2022-11-03 03:51:49,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:49,565 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-11-03 03:51:49,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,565 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-11-03 03:51:49,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:51:49,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:49,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:49,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:51:49,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash -113664359, now seen corresponding path program 1 times [2022-11-03 03:51:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:49,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911576296] [2022-11-03 03:51:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:49,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:49,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911576296] [2022-11-03 03:51:49,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911576296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:49,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:49,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:49,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610226476] [2022-11-03 03:51:49,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:49,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:49,716 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:49,807 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-11-03 03:51:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 03:51:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:49,808 INFO L225 Difference]: With dead ends: 69 [2022-11-03 03:51:49,809 INFO L226 Difference]: Without dead ends: 69 [2022-11-03 03:51:49,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:49,810 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:49,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 52 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:51:49,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-03 03:51:49,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2022-11-03 03:51:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-11-03 03:51:49,815 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 13 [2022-11-03 03:51:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:49,815 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-11-03 03:51:49,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-11-03 03:51:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:51:49,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:49,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:49,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:51:49,817 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:49,817 INFO L85 PathProgramCache]: Analyzing trace with hash -113664358, now seen corresponding path program 1 times [2022-11-03 03:51:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:49,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462776566] [2022-11-03 03:51:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:49,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:49,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:49,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462776566] [2022-11-03 03:51:49,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462776566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:49,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690241657] [2022-11-03 03:51:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:49,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:49,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:49,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:49,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:51:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:50,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:51:50,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:50,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:50,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690241657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:50,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1678269031] [2022-11-03 03:51:50,217 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 03:51:50,218 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:51:50,223 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:51:50,229 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:51:50,230 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:51:50,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:51:50,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:50,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:51:50,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:51:50,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:51:50,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:51:50,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:51:50,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:51:50,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:51:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-03 03:51:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 03:51:50,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:51:50,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:51:50,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:51:50,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:51:50,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:50,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:51:50,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,004 INFO L356 Elim1Store]: treesize reduction 54, result has 14.3 percent of original size [2022-11-03 03:51:51,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 84 [2022-11-03 03:51:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 41 [2022-11-03 03:51:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-11-03 03:51:51,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2022-11-03 03:51:51,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,412 INFO L356 Elim1Store]: treesize reduction 106, result has 19.7 percent of original size [2022-11-03 03:51:51,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 454 treesize of output 435 [2022-11-03 03:51:51,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,474 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:51:51,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 460 treesize of output 441 [2022-11-03 03:51:51,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,578 INFO L356 Elim1Store]: treesize reduction 142, result has 19.3 percent of original size [2022-11-03 03:51:51,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 454 treesize of output 456 [2022-11-03 03:51:51,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,807 INFO L356 Elim1Store]: treesize reduction 105, result has 2.8 percent of original size [2022-11-03 03:51:51,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 465 treesize of output 434 [2022-11-03 03:51:51,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:51,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,897 INFO L356 Elim1Store]: treesize reduction 147, result has 9.3 percent of original size [2022-11-03 03:51:51,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 459 treesize of output 453 [2022-11-03 03:51:51,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:51,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,006 INFO L356 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-11-03 03:51:52,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 446 treesize of output 442 [2022-11-03 03:51:52,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:52,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:52,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:52,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,228 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-03 03:51:52,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 637 treesize of output 591 [2022-11-03 03:51:52,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:52,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:52,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,340 INFO L356 Elim1Store]: treesize reduction 136, result has 11.1 percent of original size [2022-11-03 03:51:52,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 673 treesize of output 564 [2022-11-03 03:51:52,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:52,478 INFO L356 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2022-11-03 03:51:52,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 640 treesize of output 540 [2022-11-03 03:51:52,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:52,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:53,038 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:51:53,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 1122 treesize of output 1090 [2022-11-03 03:51:53,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:53,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:51:53,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:53,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:51:53,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:51:53,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:51:53,710 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:51:53,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:51:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:53,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:51:53,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:53,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:51:53,829 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:51:53,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:51:53,858 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 03:51:53,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:51:53,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:51:53,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:53,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:53,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:51:53,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:51:53,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:51:54,046 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:51:54,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:51:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:54,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:51:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:54,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:51:54,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:54,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:54,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:51:54,252 INFO L356 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-11-03 03:51:54,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2022-11-03 03:51:54,366 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:51:54,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:51:54,395 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:51:56,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1181#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (<= (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (<= 0 |#NULL.base|) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= |#NULL.base| 0) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12)) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|))' at error location [2022-11-03 03:51:56,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:51:56,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:51:56,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-03 03:51:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917804635] [2022-11-03 03:51:56,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:51:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:51:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:51:56,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:51:56,048 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:56,100 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2022-11-03 03:51:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:51:56,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 03:51:56,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:56,101 INFO L225 Difference]: With dead ends: 65 [2022-11-03 03:51:56,102 INFO L226 Difference]: Without dead ends: 65 [2022-11-03 03:51:56,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:51:56,103 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 23 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:56,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 194 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:51:56,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-03 03:51:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-11-03 03:51:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 62 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2022-11-03 03:51:56,107 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 13 [2022-11-03 03:51:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:56,107 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2022-11-03 03:51:56,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2022-11-03 03:51:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:51:56,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:56,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:56,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:56,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 03:51:56,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:51:56,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1961162740, now seen corresponding path program 1 times [2022-11-03 03:51:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:56,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446548099] [2022-11-03 03:51:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:56,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:56,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:56,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446548099] [2022-11-03 03:51:56,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446548099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:56,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465007390] [2022-11-03 03:51:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:56,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:56,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:56,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:56,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:51:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:56,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:51:56,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:56,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:51:56,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:51:56,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:56,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:51:56,833 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:51:56,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:51:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:56,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:57,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465007390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:57,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2072278745] [2022-11-03 03:51:57,112 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 03:51:57,112 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:51:57,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:51:57,113 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:51:57,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:51:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:51:57,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:57,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:51:57,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:51:57,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:51:57,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:51:57,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:51:57,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:51:57,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:51:57,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-03 03:51:57,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:51:57,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:51:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 03:51:57,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:51:57,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:51:57,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:51:57,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,608 INFO L356 Elim1Store]: treesize reduction 54, result has 14.3 percent of original size [2022-11-03 03:51:57,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 84 [2022-11-03 03:51:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-03 03:51:57,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-03 03:51:57,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 54 [2022-11-03 03:51:57,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:57,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:57,881 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 03:51:57,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 478 treesize of output 414 [2022-11-03 03:51:57,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:57,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:57,942 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-03 03:51:57,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 484 treesize of output 465 [2022-11-03 03:51:57,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:57,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:57,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:57,999 INFO L356 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2022-11-03 03:51:58,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 478 treesize of output 471 [2022-11-03 03:51:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,146 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:51:58,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 489 treesize of output 417 [2022-11-03 03:51:58,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,186 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-03 03:51:58,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 489 treesize of output 474 [2022-11-03 03:51:58,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,266 INFO L356 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-03 03:51:58,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 476 treesize of output 472 [2022-11-03 03:51:58,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,476 INFO L356 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-03 03:51:58,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 656 treesize of output 542 [2022-11-03 03:51:58,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,632 INFO L356 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2022-11-03 03:51:58,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 581 treesize of output 505 [2022-11-03 03:51:58,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:58,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:51:58,722 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-11-03 03:51:58,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 499 treesize of output 453 [2022-11-03 03:51:59,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,264 INFO L356 Elim1Store]: treesize reduction 246, result has 9.9 percent of original size [2022-11-03 03:51:59,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 1026 treesize of output 1009 [2022-11-03 03:51:59,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:51:59,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:59,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:59,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:51:59,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:51:59,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:51:59,739 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:51:59,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:51:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:51:59,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:59,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:51:59,855 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:51:59,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:51:59,879 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 03:51:59,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:51:59,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:59,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:51:59,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:51:59,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:51:59,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:00,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:00,049 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:00,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:00,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:00,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:00,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:00,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:00,179 INFO L356 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-11-03 03:52:00,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2022-11-03 03:52:00,285 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:00,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:00,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:52:01,696 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1414#(and (= (select |#valid| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (= (select (select |#memory_int| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~data#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= |ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12)) (= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (= |#NULL.base| 0))' at error location [2022-11-03 03:52:01,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:52:01,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:52:01,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2022-11-03 03:52:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479970651] [2022-11-03 03:52:01,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:52:01,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:52:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:52:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:52:01,698 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:01,877 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2022-11-03 03:52:01,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:01,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 03:52:01,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:01,880 INFO L225 Difference]: With dead ends: 78 [2022-11-03 03:52:01,880 INFO L226 Difference]: Without dead ends: 78 [2022-11-03 03:52:01,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:52:01,881 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 241 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:01,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 57 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2022-11-03 03:52:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-03 03:52:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2022-11-03 03:52:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-11-03 03:52:01,886 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 15 [2022-11-03 03:52:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:01,887 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-11-03 03:52:01,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-11-03 03:52:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 03:52:01,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:01,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:01,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:02,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 03:52:02,101 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:02,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2137756159, now seen corresponding path program 1 times [2022-11-03 03:52:02,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:02,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715983298] [2022-11-03 03:52:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:02,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:52:02,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:02,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715983298] [2022-11-03 03:52:02,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715983298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:02,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:02,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:52:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291642200] [2022-11-03 03:52:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:02,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:52:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:52:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:02,282 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:02,398 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2022-11-03 03:52:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:52:02,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 03:52:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:02,400 INFO L225 Difference]: With dead ends: 76 [2022-11-03 03:52:02,400 INFO L226 Difference]: Without dead ends: 76 [2022-11-03 03:52:02,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:02,401 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:02,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 43 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-03 03:52:02,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2022-11-03 03:52:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2022-11-03 03:52:02,406 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 29 [2022-11-03 03:52:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:02,406 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2022-11-03 03:52:02,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2022-11-03 03:52:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 03:52:02,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:02,408 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:02,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:52:02,408 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2137756158, now seen corresponding path program 1 times [2022-11-03 03:52:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167528448] [2022-11-03 03:52:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:52:02,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:02,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167528448] [2022-11-03 03:52:02,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167528448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:02,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:02,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:52:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481688300] [2022-11-03 03:52:02,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:52:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:02,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:52:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:02,663 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:02,771 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2022-11-03 03:52:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:02,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 03:52:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:02,773 INFO L225 Difference]: With dead ends: 64 [2022-11-03 03:52:02,773 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 03:52:02,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:02,774 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:02,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 48 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 03:52:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-11-03 03:52:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.346938775510204) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2022-11-03 03:52:02,778 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 29 [2022-11-03 03:52:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:02,778 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2022-11-03 03:52:02,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2022-11-03 03:52:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 03:52:02,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:02,779 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:52:02,780 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -118625175, now seen corresponding path program 1 times [2022-11-03 03:52:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:02,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239550561] [2022-11-03 03:52:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:52:03,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:03,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239550561] [2022-11-03 03:52:03,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239550561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:03,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069929612] [2022-11-03 03:52:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:03,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:03,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:03,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:52:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:03,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 03:52:03,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:03,964 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 03:52:03,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 03:52:04,046 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:04,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:52:04,162 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-03 03:52:04,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-03 03:52:04,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:04,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 03:52:04,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:52:04,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 03:52:04,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:52:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:52:04,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:04,425 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_845 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_845) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_main_~data_init~0#1|)) is different from false [2022-11-03 03:52:04,450 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_844 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_844) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_845) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_main_~data_init~0#1|)) is different from false [2022-11-03 03:52:04,458 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:04,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 22 [2022-11-03 03:52:04,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2022-11-03 03:52:04,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 44 [2022-11-03 03:52:04,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2022-11-03 03:52:04,984 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:04,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 49 [2022-11-03 03:52:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked. [2022-11-03 03:52:05,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069929612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [953534249] [2022-11-03 03:52:05,123 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-03 03:52:05,123 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:52:05,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:52:05,124 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:52:05,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:52:05,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:52:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:05,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:05,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:05,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:05,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:05,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:05,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:05,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:52:05,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:05,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-03 03:52:05,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:05,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:05,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 03:52:05,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:05,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:05,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:05,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-03 03:52:05,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-03 03:52:05,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-03 03:52:05,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 49 [2022-11-03 03:52:05,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:05,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:05,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,815 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-03 03:52:05,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 481 treesize of output 417 [2022-11-03 03:52:05,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:05,851 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-03 03:52:05,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 487 treesize of output 468 [2022-11-03 03:52:05,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:05,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:05,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:05,904 INFO L356 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-11-03 03:52:05,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 481 treesize of output 474 [2022-11-03 03:52:06,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,081 INFO L356 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-03 03:52:06,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 479 treesize of output 475 [2022-11-03 03:52:06,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,122 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:06,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 492 treesize of output 420 [2022-11-03 03:52:06,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,162 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-03 03:52:06,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 492 treesize of output 477 [2022-11-03 03:52:06,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,377 INFO L356 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-03 03:52:06,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 635 treesize of output 521 [2022-11-03 03:52:06,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,449 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-11-03 03:52:06,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 478 treesize of output 432 [2022-11-03 03:52:06,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:06,555 INFO L356 Elim1Store]: treesize reduction 186, result has 15.8 percent of original size [2022-11-03 03:52:06,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 511 treesize of output 468 [2022-11-03 03:52:06,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:07,064 INFO L356 Elim1Store]: treesize reduction 254, result has 7.0 percent of original size [2022-11-03 03:52:07,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 984 treesize of output 955 [2022-11-03 03:52:07,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:07,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:07,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:07,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:07,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:07,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:07,472 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:07,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:07,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:07,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:07,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:07,566 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:07,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:07,596 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 03:52:07,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:07,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:07,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:07,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:07,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:07,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:07,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:07,757 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:07,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:07,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:07,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:07,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:07,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:07,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:07,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:07,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:07,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:07,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:07,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:07,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:07,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:08,069 INFO L356 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-11-03 03:52:08,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2022-11-03 03:52:08,162 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:08,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:08,188 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:52:11,901 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2064#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (= |ULTIMATE.start_main_~data_new~0#1| 1) (<= (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (<= 0 |#NULL.base|) (<= (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_main_~head~1#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_main_~ptr~0#1.offset|) (not (= |ULTIMATE.start_main_~data_init~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (<= |#NULL.base| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~head~1#1.base|) (= |ULTIMATE.start_main_#res#1| 1) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))' at error location [2022-11-03 03:52:11,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:52:11,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:52:11,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 12] total 30 [2022-11-03 03:52:11,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648023111] [2022-11-03 03:52:11,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:52:11,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-03 03:52:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-03 03:52:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1650, Unknown=2, NotChecked=170, Total=2070 [2022-11-03 03:52:11,912 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:12,731 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2022-11-03 03:52:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:52:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 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 32 [2022-11-03 03:52:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:12,733 INFO L225 Difference]: With dead ends: 76 [2022-11-03 03:52:12,733 INFO L226 Difference]: Without dead ends: 76 [2022-11-03 03:52:12,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=462, Invalid=2406, Unknown=2, NotChecked=210, Total=3080 [2022-11-03 03:52:12,735 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 207 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:12,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 307 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 385 Invalid, 0 Unknown, 139 Unchecked, 0.3s Time] [2022-11-03 03:52:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-03 03:52:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2022-11-03 03:52:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-11-03 03:52:12,739 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 32 [2022-11-03 03:52:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:12,739 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-11-03 03:52:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-11-03 03:52:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:52:12,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:12,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:12,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:12,961 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1965604241, now seen corresponding path program 1 times [2022-11-03 03:52:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:12,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137922436] [2022-11-03 03:52:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:52:13,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:13,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137922436] [2022-11-03 03:52:13,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137922436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:13,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:13,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:52:13,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289483501] [2022-11-03 03:52:13,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:13,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:52:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:52:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:13,163 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:13,298 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2022-11-03 03:52:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:52:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-03 03:52:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:13,300 INFO L225 Difference]: With dead ends: 80 [2022-11-03 03:52:13,300 INFO L226 Difference]: Without dead ends: 80 [2022-11-03 03:52:13,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:52:13,301 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 107 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:13,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 49 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-03 03:52:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2022-11-03 03:52:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-11-03 03:52:13,315 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2022-11-03 03:52:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:13,315 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-11-03 03:52:13,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-11-03 03:52:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:52:13,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:13,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:13,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:52:13,318 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:13,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:13,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1965604242, now seen corresponding path program 1 times [2022-11-03 03:52:13,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:13,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202072970] [2022-11-03 03:52:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:52:13,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:13,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202072970] [2022-11-03 03:52:13,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202072970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:13,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:13,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:52:13,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442586880] [2022-11-03 03:52:13,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:13,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:52:13,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:13,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:52:13,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:13,736 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:13,903 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2022-11-03 03:52:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:52:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-03 03:52:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:13,904 INFO L225 Difference]: With dead ends: 62 [2022-11-03 03:52:13,905 INFO L226 Difference]: Without dead ends: 62 [2022-11-03 03:52:13,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:52:13,906 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 92 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:13,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 54 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:13,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-03 03:52:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2022-11-03 03:52:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-11-03 03:52:13,908 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 34 [2022-11-03 03:52:13,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:13,909 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-11-03 03:52:13,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-11-03 03:52:13,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:52:13,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:13,910 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:13,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:52:13,910 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1965604279, now seen corresponding path program 1 times [2022-11-03 03:52:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:13,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563356315] [2022-11-03 03:52:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:13,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:52:15,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:15,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563356315] [2022-11-03 03:52:15,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563356315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:15,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869263135] [2022-11-03 03:52:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:15,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:15,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:15,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:52:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:15,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 03:52:15,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:15,574 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:52:15,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-03 03:52:15,636 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:52:15,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-03 03:52:15,720 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-03 03:52:15,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-03 03:52:15,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:15,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:52:15,825 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:15,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-03 03:52:15,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-03 03:52:15,967 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-03 03:52:15,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 34 [2022-11-03 03:52:16,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:16,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 26 [2022-11-03 03:52:16,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:16,161 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:16,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 16 [2022-11-03 03:52:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:16,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:16,415 INFO L356 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-11-03 03:52:16,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2022-11-03 03:52:16,435 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| Int) (v_ArrVal_1327 (Array Int Int)) (v_ArrVal_1326 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_43| Int) (v_ArrVal_1328 Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| |v_ULTIMATE.start_main_~ptr~0#1.offset_43|) (not (<= |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1326) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1327) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ 8 |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43|) v_ArrVal_1328) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_43| 4))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_43|)))) is different from false [2022-11-03 03:52:16,462 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| Int) (v_ArrVal_1327 (Array Int Int)) (v_ArrVal_1326 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_43| Int) (v_ArrVal_1324 Int) (v_ArrVal_1328 Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| |v_ULTIMATE.start_main_~ptr~0#1.offset_43|) (not (<= |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select (store (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_1324)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1326) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1327) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ 8 |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43|) v_ArrVal_1328) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_43| 4))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_43|)))) is different from false [2022-11-03 03:52:16,483 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:16,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 39 [2022-11-03 03:52:16,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 86 [2022-11-03 03:52:16,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:16,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 60 [2022-11-03 03:52:16,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:16,515 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:16,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 34 [2022-11-03 03:52:16,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:16,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2022-11-03 03:52:16,999 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 03:52:17,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 45 [2022-11-03 03:52:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-03 03:52:17,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869263135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [767915858] [2022-11-03 03:52:17,032 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 03:52:17,032 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:52:17,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:52:17,033 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:52:17,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:52:17,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:52:17,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:17,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:17,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:17,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:17,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:17,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:17,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:52:17,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:17,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-03 03:52:17,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:17,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:17,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 03:52:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:17,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:17,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-03 03:52:17,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-03 03:52:17,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-03 03:52:17,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 54 [2022-11-03 03:52:17,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,727 INFO L356 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2022-11-03 03:52:17,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 498 treesize of output 491 [2022-11-03 03:52:17,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,770 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-03 03:52:17,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 504 treesize of output 485 [2022-11-03 03:52:17,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,833 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 03:52:17,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 498 treesize of output 428 [2022-11-03 03:52:17,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:17,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:17,989 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:17,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 509 treesize of output 431 [2022-11-03 03:52:18,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,073 INFO L356 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-03 03:52:18,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 496 treesize of output 492 [2022-11-03 03:52:18,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,115 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-03 03:52:18,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 509 treesize of output 494 [2022-11-03 03:52:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,342 INFO L356 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-03 03:52:18,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 682 treesize of output 562 [2022-11-03 03:52:18,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,485 INFO L356 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2022-11-03 03:52:18,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 601 treesize of output 519 [2022-11-03 03:52:18,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:18,549 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-11-03 03:52:18,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 519 treesize of output 473 [2022-11-03 03:52:18,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:18,819 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:52:18,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 549 treesize of output 543 [2022-11-03 03:52:19,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:19,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:19,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:19,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:19,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:19,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:19,178 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:19,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:19,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:19,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:19,288 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:19,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:19,323 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 03:52:19,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:19,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:19,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:19,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:19,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:19,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:19,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:19,492 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:19,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:19,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:19,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:19,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:19,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:19,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:19,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:19,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:19,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:19,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,800 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:19,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 25 [2022-11-03 03:52:19,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:19,825 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:19,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 25 [2022-11-03 03:52:19,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-03 03:52:19,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:19,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:19,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:20,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:20,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:20,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:20,299 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:20,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:20,320 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 03:52:20,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:20,347 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:52:23,444 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2768#(and (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= |ULTIMATE.start_main_~head~1#1.offset| 0) (= |ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |ULTIMATE.start_main_~head~1#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 03:52:23,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:52:23,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:52:23,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 37 [2022-11-03 03:52:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343158218] [2022-11-03 03:52:23,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:52:23,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-03 03:52:23,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:23,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-03 03:52:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2285, Unknown=3, NotChecked=198, Total=2756 [2022-11-03 03:52:23,448 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:24,195 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (and (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select .cse0 (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| Int) (v_ArrVal_1327 (Array Int Int)) (v_ArrVal_1326 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_43| Int) (v_ArrVal_1324 Int) (v_ArrVal_1328 Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| |v_ULTIMATE.start_main_~ptr~0#1.offset_43|) (not (<= |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select (store (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_1324)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1326) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1327) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ 8 |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_43|) v_ArrVal_1328) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_43| 4))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_43|)))) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (not (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))) is different from false [2022-11-03 03:52:24,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:24,563 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2022-11-03 03:52:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:52:24,563 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 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 34 [2022-11-03 03:52:24,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:24,564 INFO L225 Difference]: With dead ends: 65 [2022-11-03 03:52:24,564 INFO L226 Difference]: Without dead ends: 65 [2022-11-03 03:52:24,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=377, Invalid=2937, Unknown=4, NotChecked=342, Total=3660 [2022-11-03 03:52:24,566 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:24,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 199 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 235 Invalid, 0 Unknown, 165 Unchecked, 0.2s Time] [2022-11-03 03:52:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-03 03:52:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2022-11-03 03:52:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 60 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-11-03 03:52:24,569 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 34 [2022-11-03 03:52:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:24,570 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-11-03 03:52:24,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-11-03 03:52:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:52:24,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:24,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:24,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:24,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 03:52:24,780 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1965604280, now seen corresponding path program 1 times [2022-11-03 03:52:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:24,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228822878] [2022-11-03 03:52:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:52:26,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:26,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228822878] [2022-11-03 03:52:26,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228822878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:26,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128457071] [2022-11-03 03:52:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:26,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:26,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:52:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:26,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-03 03:52:26,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:26,787 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:26,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:52:26,856 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:26,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:52:26,946 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-03 03:52:26,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-03 03:52:26,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:26,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:27,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:27,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:52:27,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:27,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:52:27,079 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:27,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-03 03:52:27,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-03 03:52:27,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-03 03:52:27,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:52:27,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-11-03 03:52:27,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 03:52:27,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-11-03 03:52:27,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 03:52:27,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:52:27,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:52:27,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:27,604 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:27,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 56 treesize of output 60 [2022-11-03 03:52:27,844 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:27,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-03 03:52:27,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-11-03 03:52:27,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 118 treesize of output 110 [2022-11-03 03:52:27,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 94 [2022-11-03 03:52:27,913 INFO L356 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-03 03:52:27,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2022-11-03 03:52:27,922 INFO L356 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-03 03:52:27,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2022-11-03 03:52:28,338 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 03:52:28,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 15 [2022-11-03 03:52:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:52:28,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128457071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:28,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077397579] [2022-11-03 03:52:28,359 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 03:52:28,360 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:52:28,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:52:28,361 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:52:28,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:52:28,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:52:28,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:28,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:28,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:28,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:28,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:28,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:28,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:52:28,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:28,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-03 03:52:28,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:28,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 03:52:28,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:28,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:28,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:28,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:28,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:28,764 INFO L356 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-03 03:52:28,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 114 [2022-11-03 03:52:28,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,797 INFO L356 Elim1Store]: treesize reduction 54, result has 14.3 percent of original size [2022-11-03 03:52:28,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 80 [2022-11-03 03:52:28,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-03 03:52:28,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-03 03:52:28,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:28,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:28,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,008 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:29,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 438 treesize of output 419 [2022-11-03 03:52:29,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,063 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 03:52:29,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 432 treesize of output 425 [2022-11-03 03:52:29,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,127 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 03:52:29,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 432 treesize of output 425 [2022-11-03 03:52:29,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,288 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:29,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 428 [2022-11-03 03:52:29,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,328 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:29,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 428 [2022-11-03 03:52:29,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,408 INFO L356 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-11-03 03:52:29,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 430 treesize of output 426 [2022-11-03 03:52:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,590 INFO L356 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-03 03:52:29,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 670 treesize of output 553 [2022-11-03 03:52:29,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,703 INFO L356 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2022-11-03 03:52:29,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 655 treesize of output 579 [2022-11-03 03:52:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:29,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:29,760 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-03 03:52:29,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 573 treesize of output 527 [2022-11-03 03:52:30,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:30,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:30,180 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:52:30,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 1054 treesize of output 1018 [2022-11-03 03:52:30,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:30,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:30,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:30,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:30,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:30,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:30,595 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:30,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:30,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:30,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:30,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:30,705 INFO L356 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-11-03 03:52:30,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2022-11-03 03:52:30,795 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:30,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:30,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:30,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:30,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:30,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:30,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:30,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:30,965 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:30,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:30,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:30,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:31,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:31,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:31,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:31,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:31,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:31,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:31,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:31,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,202 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:31,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 25 [2022-11-03 03:52:31,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-03 03:52:31,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:31,244 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:31,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 25 [2022-11-03 03:52:31,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:31,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:31,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:31,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:31,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:31,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:52:31,768 INFO L356 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-11-03 03:52:31,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2022-11-03 03:52:31,852 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:31,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:31,877 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:52:34,771 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3161#(and (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= |ULTIMATE.start_main_~head~1#1.offset| 0) (= |ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |ULTIMATE.start_main_~head~1#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 03:52:34,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:52:34,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:52:34,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2022-11-03 03:52:34,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467244485] [2022-11-03 03:52:34,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:52:34,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 03:52:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 03:52:34,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2332, Unknown=3, NotChecked=0, Total=2550 [2022-11-03 03:52:34,774 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 36 states, 35 states have (on average 2.657142857142857) internal successors, (93), 36 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:36,452 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2022-11-03 03:52:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 03:52:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.657142857142857) internal successors, (93), 36 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-03 03:52:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:36,453 INFO L225 Difference]: With dead ends: 125 [2022-11-03 03:52:36,453 INFO L226 Difference]: Without dead ends: 125 [2022-11-03 03:52:36,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=509, Invalid=3778, Unknown=3, NotChecked=0, Total=4290 [2022-11-03 03:52:36,455 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 516 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:36,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 192 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 600 Invalid, 0 Unknown, 217 Unchecked, 0.6s Time] [2022-11-03 03:52:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-03 03:52:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 63. [2022-11-03 03:52:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 62 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2022-11-03 03:52:36,459 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 34 [2022-11-03 03:52:36,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:36,459 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2022-11-03 03:52:36,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.657142857142857) internal successors, (93), 36 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2022-11-03 03:52:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 03:52:36,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:36,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:36,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:36,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:52:36,680 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:36,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:36,681 INFO L85 PathProgramCache]: Analyzing trace with hash -839883483, now seen corresponding path program 1 times [2022-11-03 03:52:36,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:36,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017428414] [2022-11-03 03:52:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:37,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017428414] [2022-11-03 03:52:37,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017428414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851897942] [2022-11-03 03:52:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:37,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:37,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:37,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:37,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:52:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:38,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 03:52:38,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:38,145 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:52:38,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-03 03:52:38,219 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:52:38,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-03 03:52:38,328 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-03 03:52:38,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-03 03:52:38,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:38,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:52:38,428 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:38,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 03:52:38,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 03:52:38,560 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-03 03:52:38,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 29 [2022-11-03 03:52:38,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:38,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 21 [2022-11-03 03:52:38,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:38,721 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:38,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 11 [2022-11-03 03:52:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:38,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:38,871 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1835 (Array Int Int)) (v_ArrVal_1836 Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_55| Int)) (or (< |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| |v_ULTIMATE.start_main_~ptr~0#1.offset_55|) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1835) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) v_ArrVal_1836) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_55| 4)))) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_55|)))) is different from false [2022-11-03 03:52:38,901 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1835 (Array Int Int)) (v_ArrVal_1834 (Array Int Int)) (v_ArrVal_1836 Int) (|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_55| Int)) (or (not (<= |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_55|)) (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62| |v_ULTIMATE.start_main_~ptr~0#1.offset_55|) (not (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1834) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1835) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ 8 |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62|) v_ArrVal_1836) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_55| 4)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))) is different from false [2022-11-03 03:52:38,925 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1835 (Array Int Int)) (v_ArrVal_1834 (Array Int Int)) (v_ArrVal_1836 Int) (|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_55| Int) (v_ArrVal_1833 Int)) (or (not (<= |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~ptr~0#1.offset_55|)) (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62| |v_ULTIMATE.start_main_~ptr~0#1.offset_55|) (not (= (select (store (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_1833)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1834) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1835) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ 8 |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_62|) v_ArrVal_1836) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_55| 4)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))) is different from false [2022-11-03 03:52:38,941 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:38,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2022-11-03 03:52:38,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 91 [2022-11-03 03:52:38,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:38,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 64 [2022-11-03 03:52:38,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:38,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 59 treesize of output 55 [2022-11-03 03:52:38,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:38,974 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:38,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 59 treesize of output 59 [2022-11-03 03:52:39,385 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 03:52:39,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 62 treesize of output 59 [2022-11-03 03:52:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-03 03:52:39,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851897942] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:39,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [785358632] [2022-11-03 03:52:39,409 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-03 03:52:39,409 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:52:39,409 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:52:39,409 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:52:39,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:52:39,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:52:39,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:39,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:39,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:39,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-03 03:52:39,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:39,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:39,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:39,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:52:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:52:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-03 03:52:39,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:39,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:52:39,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 03:52:39,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:39,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:39,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-11-03 03:52:39,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-03 03:52:39,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-03 03:52:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-03 03:52:39,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:39,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-03 03:52:40,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,024 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:40,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 438 treesize of output 419 [2022-11-03 03:52:40,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,082 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 03:52:40,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 432 treesize of output 425 [2022-11-03 03:52:40,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,136 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 03:52:40,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 432 treesize of output 425 [2022-11-03 03:52:40,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,254 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:40,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 428 [2022-11-03 03:52:40,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,330 INFO L356 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-11-03 03:52:40,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 430 treesize of output 426 [2022-11-03 03:52:40,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,372 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:52:40,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 428 [2022-11-03 03:52:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,562 INFO L356 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-03 03:52:40,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 663 treesize of output 546 [2022-11-03 03:52:40,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,699 INFO L356 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2022-11-03 03:52:40,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 648 treesize of output 572 [2022-11-03 03:52:40,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:40,755 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-03 03:52:40,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 566 treesize of output 520 [2022-11-03 03:52:40,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,012 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:52:41,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 549 treesize of output 543 [2022-11-03 03:52:41,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:41,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:41,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:41,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:41,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:41,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:41,299 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:41,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:41,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:41,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:41,404 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:41,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:41,426 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 03:52:41,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 03:52:41,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:41,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:41,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:41,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:41,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:52:41,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:41,612 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 03:52:41,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-11-03 03:52:41,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-11-03 03:52:41,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 11 [2022-11-03 03:52:41,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:41,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:41,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:41,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:52:41,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:41,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:41,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,846 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:41,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 25 [2022-11-03 03:52:41,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:52:41,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:41,874 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:41,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 25 [2022-11-03 03:52:41,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-03 03:52:42,035 INFO L356 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-11-03 03:52:42,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2022-11-03 03:52:42,118 INFO L356 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-11-03 03:52:42,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-03 03:52:42,152 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:52:46,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [785358632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:46,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:52:46,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [15, 15, 16] total 57 [2022-11-03 03:52:46,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642986791] [2022-11-03 03:52:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:52:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:52:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2484, Unknown=3, NotChecked=318, Total=3192 [2022-11-03 03:52:46,765 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:49,928 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2022-11-03 03:52:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 03:52:49,928 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-03 03:52:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:49,929 INFO L225 Difference]: With dead ends: 79 [2022-11-03 03:52:49,929 INFO L226 Difference]: Without dead ends: 79 [2022-11-03 03:52:49,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=600, Invalid=3699, Unknown=3, NotChecked=390, Total=4692 [2022-11-03 03:52:49,931 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 117 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:49,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 65 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:52:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-03 03:52:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2022-11-03 03:52:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 68 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2022-11-03 03:52:49,934 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 36 [2022-11-03 03:52:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:49,935 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2022-11-03 03:52:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2022-11-03 03:52:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 03:52:49,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:49,936 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:49,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:50,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:50,152 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-03 03:52:50,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash -266995469, now seen corresponding path program 1 times [2022-11-03 03:52:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:50,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919206824] [2022-11-03 03:52:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:53,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:53,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919206824] [2022-11-03 03:52:53,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919206824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977438701] [2022-11-03 03:52:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:53,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:53,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:53,185 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:53,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcba3d1a-bb1a-44ed-a60a-2f8a2cd857a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:52:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:53,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-03 03:52:53,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:53,615 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:53,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:52:53,755 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 03:52:53,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-03 03:52:53,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:52:53,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 03:52:54,090 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-03 03:52:54,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-03 03:52:54,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:52:54,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:54,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:52:54,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:54,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:52:54,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:52:54,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:54,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:52:54,357 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:52:54,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 88 [2022-11-03 03:52:54,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:54,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2022-11-03 03:52:54,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-03 03:52:54,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 38 [2022-11-03 03:52:54,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:52:54,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 33 [2022-11-03 03:52:54,628 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:52:54,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 67 [2022-11-03 03:52:54,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-11-03 03:52:54,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:54,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:52:54,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:52:54,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:52:54,825 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:52:54,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 40 [2022-11-03 03:52:54,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:52:54,959 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:52:54,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 47 [2022-11-03 03:52:54,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 22 treesize of output 10 [2022-11-03 03:52:55,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-03 03:52:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:55,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:55,214 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:55,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-11-03 03:52:55,235 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_7 (Array Int Int))) (or (not (= (select v_arrayElimArr_7 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) 1)) (= |c_ULTIMATE.start_main_~data_init~0#1| (let ((.cse0 (+ 4 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_arrayElimArr_7) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse0)))))) is different from false [2022-11-03 03:52:55,250 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_7 (Array Int Int)) (v_ArrVal_2095 (Array Int Int))) (or (= (let ((.cse0 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse1 (+ 4 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_2095) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_arrayElimArr_7) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse1)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse1))) |c_ULTIMATE.start_main_~data_init~0#1|) (not (= (select v_arrayElimArr_7 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) 1)))) is different from false [2022-11-03 03:52:55,281 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2094 (Array Int Int)) (v_ArrVal_2093 (Array Int Int)) (v_arrayElimArr_7 (Array Int Int)) (v_ArrVal_2091 Int) (v_ArrVal_2095 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~data_init~0#1| (let ((.cse1 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse2 (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) v_ArrVal_2091)) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_2095) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| v_arrayElimArr_7) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_2094))) (store .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse2)) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_2093))) (store .cse3 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse2)))) (not (= (select v_arrayElimArr_7 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) 1)))) is different from false [2022-11-03 03:52:55,308 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2094 (Array Int Int)) (v_ArrVal_2093 (Array Int Int)) (v_ArrVal_2087 Int) (v_arrayElimArr_7 (Array Int Int)) (v_ArrVal_2090 (Array Int Int)) (v_ArrVal_2089 Int) (v_ArrVal_2091 Int) (v_ArrVal_2095 (Array Int Int))) (or (not (= (select v_arrayElimArr_7 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) 1)) (= (let ((.cse2 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse3 (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (select (select (store (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| v_ArrVal_2090))) (store .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) v_ArrVal_2091))) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_2095) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| v_arrayElimArr_7) (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_2089)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_2094))) (store .cse1 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse3)) (select (select (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_2087)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_2093))) (store .cse4 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse3))) |c_ULTIMATE.start_main_~data_init~0#1|))) is different from false [2022-11-03 03:52:55,334 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:55,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 118 [2022-11-03 03:52:55,354 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:55,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1132 treesize of output 1128 [2022-11-03 03:52:55,378 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:55,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1112 treesize of output 818 [2022-11-03 03:52:55,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 928 treesize of output 900 [2022-11-03 03:52:55,433 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:52:55,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10848 treesize of output 10598 [2022-11-03 03:52:55,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12494 treesize of output 11982 [2022-11-03 03:52:55,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4262 treesize of output 4102