./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/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_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/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_3961e722-d9f5-4281-b826-4281689fa3d0/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 cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 --- 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 04:00:57,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:00:57,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:00:57,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:00:57,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:00:57,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:00:57,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:00:57,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:00:57,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:00:57,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:00:57,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:00:57,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:00:57,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:00:57,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:00:57,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:00:57,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:00:57,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:00:57,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:00:57,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:00:57,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:00:57,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:00:57,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:00:57,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:00:57,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:00:57,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:00:57,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:00:57,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:00:57,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:00:57,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:00:57,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:00:57,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:00:57,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:00:57,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:00:57,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:00:57,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:00:57,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:00:57,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:00:57,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:00:57,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:00:57,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:00:57,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:00:57,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 04:00:57,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:00:57,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:00:57,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:00:57,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:00:57,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:00:57,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:00:57,154 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:00:57,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:00:57,155 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:00:57,155 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:00:57,156 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:00:57,156 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:00:57,157 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:00:57,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:00:57,157 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:00:57,157 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:00:57,157 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:00:57,158 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:00:57,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 04:00:57,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 04:00:57,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:00:57,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:00:57,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 04:00:57,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:00:57,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:00:57,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:00:57,160 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 04:00:57,160 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 04:00:57,160 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 04:00:57,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:00:57,161 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:00:57,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:00:57,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:00:57,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:00:57,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:00:57,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:57,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:00:57,163 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:00:57,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:00:57,163 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:00:57,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:00:57,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:00:57,164 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_3961e722-d9f5-4281-b826-4281689fa3d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 [2022-11-03 04:00:57,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:00:57,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:00:57,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:00:57,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:00:57,494 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:00:57,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2022-11-03 04:00:57,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/data/9ace95a82/bd04b527cc7f489a9da3549d96d368a4/FLAGc3ec78e5b [2022-11-03 04:00:58,095 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:00:58,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2022-11-03 04:00:58,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/data/9ace95a82/bd04b527cc7f489a9da3549d96d368a4/FLAGc3ec78e5b [2022-11-03 04:00:58,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/data/9ace95a82/bd04b527cc7f489a9da3549d96d368a4 [2022-11-03 04:00:58,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:00:58,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:00:58,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:58,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:00:58,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:00:58,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe1012a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58, skipping insertion in model container [2022-11-03 04:00:58,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:00:58,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:00:58,778 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_3961e722-d9f5-4281-b826-4281689fa3d0/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2022-11-03 04:00:58,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:58,788 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:00:58,834 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_3961e722-d9f5-4281-b826-4281689fa3d0/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2022-11-03 04:00:58,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:58,862 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:00:58,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58 WrapperNode [2022-11-03 04:00:58,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:58,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:58,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:00:58,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:00:58,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,942 INFO L138 Inliner]: procedures = 126, calls = 27, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 114 [2022-11-03 04:00:58,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:58,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:00:58,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:00:58,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:00:58,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:58,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:59,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:00:59,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:00:59,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:00:59,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:00:59,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (1/1) ... [2022-11-03 04:00:59,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:59,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:59,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:00:59,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:00:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-03 04:00:59,086 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-03 04:00:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:00:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:00:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:00:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:00:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:00:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:00:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:00:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:00:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:00:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:00:59,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:00:59,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:00:59,290 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-03 04:00:59,613 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:00:59,676 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:00:59,677 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 04:00:59,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:59 BoogieIcfgContainer [2022-11-03 04:00:59,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:00:59,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:00:59,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:00:59,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:00:59,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:58" (1/3) ... [2022-11-03 04:00:59,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd5c957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:59, skipping insertion in model container [2022-11-03 04:00:59,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:58" (2/3) ... [2022-11-03 04:00:59,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd5c957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:59, skipping insertion in model container [2022-11-03 04:00:59,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:59" (3/3) ... [2022-11-03 04:00:59,691 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2022-11-03 04:00:59,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:00:59,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-11-03 04:00:59,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:00:59,770 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;@2eacad7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:00:59,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-03 04:00:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 27 states have (on average 2.185185185185185) internal successors, (59), 50 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:00:59,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:59,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:00:59,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:00:59,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash 5795537, now seen corresponding path program 1 times [2022-11-03 04:00:59,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:59,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420667609] [2022-11-03 04:00:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:00,124 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 04:01:00,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:00,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420667609] [2022-11-03 04:01:00,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420667609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:00,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:00,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:01:00,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534012509] [2022-11-03 04:01:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:00,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:00,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:00,180 INFO L87 Difference]: Start difference. First operand has 52 states, 27 states have (on average 2.185185185185185) internal successors, (59), 50 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:00,363 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2022-11-03 04:01:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 04:01:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:00,374 INFO L225 Difference]: With dead ends: 82 [2022-11-03 04:01:00,374 INFO L226 Difference]: Without dead ends: 77 [2022-11-03 04:01:00,376 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 04:01:00,381 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 49 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:00,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 65 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-03 04:01:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2022-11-03 04:01:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 2.04) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 04:01:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-03 04:01:00,430 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 4 [2022-11-03 04:01:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:00,431 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-03 04:01:00,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-03 04:01:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:01:00,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:00,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:01:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:01:00,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 5795538, now seen corresponding path program 1 times [2022-11-03 04:01:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:00,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795337996] [2022-11-03 04:01:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:00,620 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 04:01:00,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:00,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795337996] [2022-11-03 04:01:00,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795337996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:00,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:00,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:01:00,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553163264] [2022-11-03 04:01:00,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:00,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:00,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:00,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:00,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:00,624 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:00,706 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-11-03 04:01:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 04:01:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:00,708 INFO L225 Difference]: With dead ends: 74 [2022-11-03 04:01:00,708 INFO L226 Difference]: Without dead ends: 74 [2022-11-03 04:01:00,709 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 04:01:00,710 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 45 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:00,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 66 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-03 04:01:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2022-11-03 04:01:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.92) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 04:01:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-03 04:01:00,717 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 4 [2022-11-03 04:01:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:00,718 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-03 04:01:00,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-03 04:01:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 04:01:00,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:00,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 04:01:00,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:01:00,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:00,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:00,721 INFO L85 PathProgramCache]: Analyzing trace with hash 184343024, now seen corresponding path program 1 times [2022-11-03 04:01:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:00,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040934140] [2022-11-03 04:01:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:00,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:00,795 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 04:01:00,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:00,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040934140] [2022-11-03 04:01:00,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040934140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:00,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:00,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:01:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101530975] [2022-11-03 04:01:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:00,799 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:00,835 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-11-03 04:01:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 04:01:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:00,837 INFO L225 Difference]: With dead ends: 52 [2022-11-03 04:01:00,837 INFO L226 Difference]: Without dead ends: 52 [2022-11-03 04:01:00,837 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 04:01:00,839 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:00,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-03 04:01:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2022-11-03 04:01:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 04:01:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-11-03 04:01:00,847 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 5 [2022-11-03 04:01:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:00,847 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-11-03 04:01:00,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-11-03 04:01:00,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 04:01:00,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:00,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:00,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:01:00,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash 770785749, now seen corresponding path program 1 times [2022-11-03 04:01:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308074478] [2022-11-03 04:01:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:00,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:00,912 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 04:01:00,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:00,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308074478] [2022-11-03 04:01:00,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308074478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:00,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:00,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:01:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837751130] [2022-11-03 04:01:00,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:00,916 INFO L87 Difference]: Start difference. First operand 43 states and 49 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 04:01:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:00,957 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-11-03 04:01:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:00,958 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 04:01:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:00,959 INFO L225 Difference]: With dead ends: 49 [2022-11-03 04:01:00,959 INFO L226 Difference]: Without dead ends: 49 [2022-11-03 04:01:00,959 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 04:01:00,961 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:00,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-03 04:01:00,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-11-03 04:01:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 47 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 04:01:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2022-11-03 04:01:00,966 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 8 [2022-11-03 04:01:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:00,966 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2022-11-03 04:01:00,967 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 04:01:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2022-11-03 04:01:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 04:01:00,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:00,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:00,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:01:00,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1983908387, now seen corresponding path program 1 times [2022-11-03 04:01:00,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:00,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320457987] [2022-11-03 04:01:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:01,117 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 04:01:01,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:01,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320457987] [2022-11-03 04:01:01,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320457987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:01,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806030760] [2022-11-03 04:01:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:01,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:01,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:01,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:01,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:01:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:01,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:01:01,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:01,314 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 04:01:01,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:01,339 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 04:01:01,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806030760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:01,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [442063146] [2022-11-03 04:01:01,359 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 04:01:01,359 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:01,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:01,369 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:01,370 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:01,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,456 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 04:01:01,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,540 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 04:01:01,559 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 15 treesize of output 1 [2022-11-03 04:01:01,579 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 15 treesize of output 1 [2022-11-03 04:01:01,614 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 04:01:01,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,637 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 31 [2022-11-03 04:01:01,658 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 04:01:01,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 04:01:01,747 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 04:01:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 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 31 [2022-11-03 04:01:01,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,835 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 04:01:01,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,911 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 04:01:01,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,928 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 04:01:01,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:01,951 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 04:01:02,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,006 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 04:01:02,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,039 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 04:01:02,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,064 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 04:01:02,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,227 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-03 04:01:02,227 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 4 case distinctions, treesize of input 334 treesize of output 333 [2022-11-03 04:01:02,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,270 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 04:01:02,271 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 340 treesize of output 321 [2022-11-03 04:01:02,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,314 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-03 04:01:02,315 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 4 case distinctions, treesize of input 334 treesize of output 333 [2022-11-03 04:01:02,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,437 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 04:01:02,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,493 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 04:01:02,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,509 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 04:01:02,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,532 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 04:01:02,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,570 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 32 treesize of output 34 [2022-11-03 04:01:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,594 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 04:01:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,616 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 04:01:02,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,716 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 04:01:02,717 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 340 treesize of output 321 [2022-11-03 04:01:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,760 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-03 04:01:02,761 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 4 case distinctions, treesize of input 334 treesize of output 333 [2022-11-03 04:01:02,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:02,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:02,803 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-03 04:01:02,803 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 4 case distinctions, treesize of input 334 treesize of output 333 [2022-11-03 04:01:03,091 INFO L356 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2022-11-03 04:01:03,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 261 treesize of output 267 [2022-11-03 04:01:03,455 INFO L356 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-03 04:01:03,456 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 3 case distinctions, treesize of input 329 treesize of output 320 [2022-11-03 04:01:03,507 INFO L356 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-03 04:01:03,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 325 treesize of output 322 [2022-11-03 04:01:03,557 INFO L356 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-03 04:01:03,558 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 3 case distinctions, treesize of input 329 treesize of output 320 [2022-11-03 04:01:03,624 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:06,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [442063146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:06,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:01:06,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-11-03 04:01:06,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044686426] [2022-11-03 04:01:06,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:06,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:01:06,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:01:06,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:01:06,646 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 04:01:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:07,489 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2022-11-03 04:01:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:01:07,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-03 04:01:07,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:07,492 INFO L225 Difference]: With dead ends: 59 [2022-11-03 04:01:07,492 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 04:01:07,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:01:07,494 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:07,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:01:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 04:01:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2022-11-03 04:01:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.631578947368421) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 04:01:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-11-03 04:01:07,500 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 12 [2022-11-03 04:01:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:07,500 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-11-03 04:01:07,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 04:01:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-11-03 04:01:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:01:07,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:07,501 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 04:01:07,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:07,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:07,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:07,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1840726210, now seen corresponding path program 1 times [2022-11-03 04:01:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:07,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309332605] [2022-11-03 04:01:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:07,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:07,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309332605] [2022-11-03 04:01:07,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309332605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:07,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446096778] [2022-11-03 04:01:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:07,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:07,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:07,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:01:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:07,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:01:07,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:08,001 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 04:01:08,032 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 04:01:08,032 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 04:01:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:08,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:08,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446096778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:08,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1188899619] [2022-11-03 04:01:08,179 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-03 04:01:08,179 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:08,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:08,179 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:08,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,210 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 04:01:08,239 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 15 treesize of output 1 [2022-11-03 04:01:08,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,251 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 04:01:08,261 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 15 treesize of output 1 [2022-11-03 04:01:08,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,295 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 31 [2022-11-03 04:01:08,309 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 04:01:08,318 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 04:01:08,338 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 04:01:08,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,354 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 31 [2022-11-03 04:01:08,367 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 04:01:08,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,425 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 22 treesize of output 30 [2022-11-03 04:01:08,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,472 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 30 treesize of output 21 [2022-11-03 04:01:08,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,489 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 30 treesize of output 21 [2022-11-03 04:01:08,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,505 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 04:01:08,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 04:01:08,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,553 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 28 treesize of output 30 [2022-11-03 04:01:08,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,572 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 04:01:08,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:08,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:08,677 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 04:01:08,678 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 4 case distinctions, treesize of input 326 treesize of output 325 [2022-11-03 04:01:08,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:08,708 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 04:01:08,709 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 332 treesize of output 313 [2022-11-03 04:01:08,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:08,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:08,744 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 04:01:08,744 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 4 case distinctions, treesize of input 326 treesize of output 325 [2022-11-03 04:01:08,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,873 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 22 treesize of output 30 [2022-11-03 04:01:08,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,920 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 30 treesize of output 21 [2022-11-03 04:01:08,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,937 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 04:01:08,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,951 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 30 treesize of output 21 [2022-11-03 04:01:08,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:08,985 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 04:01:09,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:09,004 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 28 treesize of output 30 [2022-11-03 04:01:09,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:09,019 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 28 treesize of output 30 [2022-11-03 04:01:09,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:09,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:09,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:09,111 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 04:01:09,111 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 4 case distinctions, treesize of input 326 treesize of output 325 [2022-11-03 04:01:09,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:09,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:09,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:09,144 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 04:01:09,144 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 332 treesize of output 313 [2022-11-03 04:01:09,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:09,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:09,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:09,180 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 04:01:09,180 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 4 case distinctions, treesize of input 326 treesize of output 325 [2022-11-03 04:01:09,453 INFO L356 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2022-11-03 04:01:09,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 258 treesize of output 264 [2022-11-03 04:01:09,718 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-03 04:01:09,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 328 treesize of output 325 [2022-11-03 04:01:09,740 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:09,740 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 1 case distinctions, treesize of input 332 treesize of output 323 [2022-11-03 04:01:09,757 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:09,758 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 1 case distinctions, treesize of input 332 treesize of output 323 [2022-11-03 04:01:09,813 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:12,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1188899619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:12,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:01:12,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-11-03 04:01:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187168452] [2022-11-03 04:01:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:12,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:01:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:01:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:01:12,933 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 04:01:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:13,637 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-11-03 04:01:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:01:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 15 [2022-11-03 04:01:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:13,638 INFO L225 Difference]: With dead ends: 57 [2022-11-03 04:01:13,638 INFO L226 Difference]: Without dead ends: 57 [2022-11-03 04:01:13,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-03 04:01:13,639 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:13,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 54 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:01:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-03 04:01:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-11-03 04:01:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 55 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 04:01:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-11-03 04:01:13,647 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 15 [2022-11-03 04:01:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:13,648 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-11-03 04:01:13,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 04:01:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-11-03 04:01:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 04:01:13,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:13,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:13,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 04:01:13,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:13,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 247919927, now seen corresponding path program 1 times [2022-11-03 04:01:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:13,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307734135] [2022-11-03 04:01:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:01:14,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:14,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307734135] [2022-11-03 04:01:14,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307734135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:14,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:14,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:14,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793379249] [2022-11-03 04:01:14,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:14,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:14,009 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 04:01:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:14,162 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2022-11-03 04:01:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:14,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 20 [2022-11-03 04:01:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:14,164 INFO L225 Difference]: With dead ends: 97 [2022-11-03 04:01:14,164 INFO L226 Difference]: Without dead ends: 97 [2022-11-03 04:01:14,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:01:14,165 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 160 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:14,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 57 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-03 04:01:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2022-11-03 04:01:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.619047619047619) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 04:01:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-03 04:01:14,186 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 20 [2022-11-03 04:01:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:14,186 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-03 04:01:14,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 04:01:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-03 04:01:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 04:01:14,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:14,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:14,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:01:14,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 247919928, now seen corresponding path program 1 times [2022-11-03 04:01:14,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:14,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894378203] [2022-11-03 04:01:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:01:14,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:14,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894378203] [2022-11-03 04:01:14,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894378203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:14,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:14,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682747731] [2022-11-03 04:01:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:14,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:14,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:14,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:14,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:14,493 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 04:01:14,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:14,678 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2022-11-03 04:01:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:14,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-11-03 04:01:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:14,679 INFO L225 Difference]: With dead ends: 82 [2022-11-03 04:01:14,680 INFO L226 Difference]: Without dead ends: 82 [2022-11-03 04:01:14,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:01:14,680 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 153 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:14,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 50 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-03 04:01:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2022-11-03 04:01:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 55 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 04:01:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-11-03 04:01:14,684 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 20 [2022-11-03 04:01:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:14,685 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-11-03 04:01:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 04:01:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-11-03 04:01:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 04:01:14,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:14,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:14,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:01:14,686 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash -900739810, now seen corresponding path program 1 times [2022-11-03 04:01:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:14,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817673868] [2022-11-03 04:01:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:01:14,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:14,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817673868] [2022-11-03 04:01:14,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817673868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:14,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741180694] [2022-11-03 04:01:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:14,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:14,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:01:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:14,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:01:14,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 04:01:14,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:14,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741180694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:14,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:01:14,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 04:01:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205703696] [2022-11-03 04:01:14,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:14,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:01:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:01:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:01:14,942 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:14,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:14,966 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-11-03 04:01:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:01:14,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 04:01:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:14,969 INFO L225 Difference]: With dead ends: 57 [2022-11-03 04:01:14,969 INFO L226 Difference]: Without dead ends: 57 [2022-11-03 04:01:14,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:14,972 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:14,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-03 04:01:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2022-11-03 04:01:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 46 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 04:01:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-03 04:01:14,976 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 21 [2022-11-03 04:01:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:14,977 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-03 04:01:14,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-03 04:01:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 04:01:14,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:14,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:15,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:15,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 04:01:15,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2027944827, now seen corresponding path program 1 times [2022-11-03 04:01:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:15,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370592537] [2022-11-03 04:01:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:15,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:01:15,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:15,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370592537] [2022-11-03 04:01:15,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370592537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:15,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063254580] [2022-11-03 04:01:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:15,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:15,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:15,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:15,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:01:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:15,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:01:15,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 04:01:15,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:15,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063254580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:15,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:01:15,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-03 04:01:15,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500894975] [2022-11-03 04:01:15,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:15,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:01:15,513 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 04:01:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:15,557 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-11-03 04:01:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:15,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-03 04:01:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:15,558 INFO L225 Difference]: With dead ends: 44 [2022-11-03 04:01:15,558 INFO L226 Difference]: Without dead ends: 44 [2022-11-03 04:01:15,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:01:15,559 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:15,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 48 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-03 04:01:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-03 04:01:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 04:01:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-11-03 04:01:15,562 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 22 [2022-11-03 04:01:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:15,562 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-11-03 04:01:15,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 04:01:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-03 04:01:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 04:01:15,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:15,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:15,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:15,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 04:01:15,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:15,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2027948306, now seen corresponding path program 1 times [2022-11-03 04:01:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:15,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766942204] [2022-11-03 04:01:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:16,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766942204] [2022-11-03 04:01:16,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766942204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:16,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087742082] [2022-11-03 04:01:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:16,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:16,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:16,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:16,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 04:01:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:16,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 04:01:16,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:16,460 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 04:01:16,487 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 04:01:16,488 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 04:01:16,521 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 04:01:16,547 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 04:01:16,571 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:01:16,572 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 34 treesize of output 35 [2022-11-03 04:01:16,680 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 31 treesize of output 13 [2022-11-03 04:01:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:16,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:16,791 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-11-03 04:01:16,792 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 21 treesize of output 20 [2022-11-03 04:01:16,797 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_521 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_521) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) is different from false [2022-11-03 04:01:16,832 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_519 Int) (v_ArrVal_521 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_519)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_521) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) is different from false [2022-11-03 04:01:16,843 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:16,843 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 2 case distinctions, treesize of input 27 treesize of output 33 [2022-11-03 04:01:16,857 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 36 treesize of output 24 [2022-11-03 04:01:16,861 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 7 treesize of output 3 [2022-11-03 04:01:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 04:01:16,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087742082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:16,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1207858344] [2022-11-03 04:01:16,921 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 04:01:16,921 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:16,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:16,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:16,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:16,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:16,944 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 04:01:16,966 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 15 treesize of output 1 [2022-11-03 04:01:16,973 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 15 treesize of output 1 [2022-11-03 04:01:16,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:16,985 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 04:01:17,006 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 04:01:17,015 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 04:01:17,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,027 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 31 [2022-11-03 04:01:17,046 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 04:01:17,055 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 04:01:17,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,069 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 31 [2022-11-03 04:01:17,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,144 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 22 treesize of output 30 [2022-11-03 04:01:17,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,185 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 30 treesize of output 21 [2022-11-03 04:01:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,199 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 30 treesize of output 21 [2022-11-03 04:01:17,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,216 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 04:01:17,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,247 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 04:01:17,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,263 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 28 treesize of output 30 [2022-11-03 04:01:17,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,278 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 28 treesize of output 30 [2022-11-03 04:01:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,320 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 37 treesize of output 42 [2022-11-03 04:01:17,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,337 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 37 treesize of output 42 [2022-11-03 04:01:17,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,355 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 04:01:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,407 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 04:01:17,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:17,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:01:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:17,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:01:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,678 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 04:01:17,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,729 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 04:01:17,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,744 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 04:01:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,757 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 04:01:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,787 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 04:01:17,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,802 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 04:01:17,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,818 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 04:01:17,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,847 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 41 treesize of output 46 [2022-11-03 04:01:17,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,861 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 41 treesize of output 46 [2022-11-03 04:01:17,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,882 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 04:01:17,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:17,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:17,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:17,960 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 04:01:18,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:18,266 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 9 [2022-11-03 04:01:18,281 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 15 treesize of output 1 [2022-11-03 04:01:18,287 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 11 treesize of output 7 [2022-11-03 04:01:18,294 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 15 treesize of output 1 [2022-11-03 04:01:18,358 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 04:01:18,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:18,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:18,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:18,377 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:18,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:18,405 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 04:01:18,457 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 04:01:18,466 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 04:01:18,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:18,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:18,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:18,487 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:18,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:18,538 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:21,548 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1716#(and (<= 0 |ULTIMATE.start_dll_update_at_#in~head#1.offset|) (<= 3 |ULTIMATE.start_dll_update_at_~data#1|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 3 |ULTIMATE.start_dll_update_at_#in~data#1|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_update_at_#in~data#1| 3) (<= |ULTIMATE.start_dll_update_at_~index#1| 0) (<= |ULTIMATE.start_dll_update_at_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_dll_update_at_#in~index#1| 1) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 3 |ULTIMATE.start_main_~new_data~0#1|) (<= |ULTIMATE.start_dll_update_at_~data#1| 3) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= 1 |ULTIMATE.start_dll_update_at_#in~index#1|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (not (= (select |#valid| |ULTIMATE.start_dll_update_at_~head#1.base|) 1)) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= |ULTIMATE.start_main_~new_data~0#1| 3) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 04:01:21,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:01:21,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:01:21,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 26 [2022-11-03 04:01:21,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405527482] [2022-11-03 04:01:21,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:21,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 04:01:21,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:21,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 04:01:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1185, Unknown=2, NotChecked=142, Total=1482 [2022-11-03 04:01:21,551 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 27 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 04:01:22,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:22,558 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-11-03 04:01:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 04:01:22,559 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 27 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) Word has length 22 [2022-11-03 04:01:22,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:22,559 INFO L225 Difference]: With dead ends: 86 [2022-11-03 04:01:22,559 INFO L226 Difference]: Without dead ends: 86 [2022-11-03 04:01:22,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=343, Invalid=1919, Unknown=2, NotChecked=186, Total=2450 [2022-11-03 04:01:22,561 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 390 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:22,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 136 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 498 Invalid, 0 Unknown, 99 Unchecked, 0.4s Time] [2022-11-03 04:01:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-03 04:01:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2022-11-03 04:01:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.380952380952381) internal successors, (58), 49 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 04:01:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-11-03 04:01:22,564 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 22 [2022-11-03 04:01:22,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:22,565 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-11-03 04:01:22,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 27 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 04:01:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-11-03 04:01:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 04:01:22,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:22,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:22,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:22,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:22,771 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2027948307, now seen corresponding path program 1 times [2022-11-03 04:01:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:22,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325850858] [2022-11-03 04:01:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:23,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:23,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325850858] [2022-11-03 04:01:23,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325850858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:23,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597839755] [2022-11-03 04:01:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:23,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:23,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 04:01:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:23,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 04:01:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:23,661 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 04:01:23,740 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 04:01:23,740 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 04:01:23,776 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 04:01:23,781 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 04:01:23,822 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 04:01:23,831 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 04:01:23,863 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:01:23,864 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 54 treesize of output 53 [2022-11-03 04:01:23,870 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 41 treesize of output 41 [2022-11-03 04:01:24,031 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 39 treesize of output 21 [2022-11-03 04:01:24,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2022-11-03 04:01:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:24,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:24,256 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:24,257 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 47 treesize of output 51 [2022-11-03 04:01:24,289 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_ArrVal_624 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_ArrVal_625 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_625) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0))) (forall ((v_prenex_1 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 9))))) is different from false [2022-11-03 04:01:24,314 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_prenex_1 (Array Int Int)) (v_ArrVal_622 Int)) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_622)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 9))) (forall ((v_ArrVal_621 Int) (v_ArrVal_624 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_621)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_ArrVal_625 (Array Int Int)) (v_ArrVal_622 Int)) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_622)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_625) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2))))) is different from false [2022-11-03 04:01:24,327 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:24,327 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 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-03 04:01:24,330 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 40 treesize of output 28 [2022-11-03 04:01:24,334 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 9 treesize of output 5 [2022-11-03 04:01:24,341 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:24,342 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 27 treesize of output 33 [2022-11-03 04:01:24,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:24,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2022-11-03 04:01:24,352 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-03 04:01:24,352 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 27 treesize of output 1 [2022-11-03 04:01:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 04:01:24,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597839755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:24,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1874209300] [2022-11-03 04:01:24,496 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 04:01:24,497 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:24,497 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:24,497 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:24,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,520 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 04:01:24,540 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 15 treesize of output 1 [2022-11-03 04:01:24,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,549 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 04:01:24,559 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 15 treesize of output 1 [2022-11-03 04:01:24,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,578 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 31 [2022-11-03 04:01:24,587 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 04:01:24,595 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 04:01:24,624 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 04:01:24,635 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 04:01:24,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,649 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 31 [2022-11-03 04:01:24,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,706 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 22 treesize of output 30 [2022-11-03 04:01:24,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,747 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 04:01:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,786 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 30 treesize of output 21 [2022-11-03 04:01:24,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,811 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 30 treesize of output 21 [2022-11-03 04:01:24,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,863 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 04:01:24,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,878 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 28 treesize of output 30 [2022-11-03 04:01:24,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,892 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 28 treesize of output 30 [2022-11-03 04:01:24,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,923 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 37 treesize of output 42 [2022-11-03 04:01:24,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,942 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 37 treesize of output 42 [2022-11-03 04:01:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:24,960 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 04:01:25,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 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 04:01:25,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:25,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:01:25,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:25,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:01:25,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,280 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 04:01:25,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 29 treesize of output 43 [2022-11-03 04:01:25,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,326 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 04:01:25,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,339 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 04:01:25,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,355 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 04:01:25,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,391 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 04:01:25,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,404 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 04:01:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,432 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 04:01:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,465 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 41 treesize of output 46 [2022-11-03 04:01:25,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,485 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 04:01:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,505 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 41 treesize of output 46 [2022-11-03 04:01:25,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,568 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 04:01:25,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:25,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:25,654 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 9 [2022-11-03 04:01:25,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:25,673 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 15 treesize of output 1 [2022-11-03 04:01:25,679 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 11 treesize of output 7 [2022-11-03 04:01:25,685 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 15 treesize of output 1 [2022-11-03 04:01:25,697 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 04:01:25,703 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 04:01:25,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,722 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 27 treesize of output 11 [2022-11-03 04:01:25,736 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 04:01:25,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,745 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 27 treesize of output 11 [2022-11-03 04:01:25,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 04:01:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,773 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 27 treesize of output 11 [2022-11-03 04:01:25,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:25,793 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:01:25,793 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 32 treesize of output 34 [2022-11-03 04:01:25,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:25,826 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:01:25,827 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 32 treesize of output 38 [2022-11-03 04:01:25,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:25,890 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 9 [2022-11-03 04:01:25,902 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 15 treesize of output 1 [2022-11-03 04:01:25,908 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 15 treesize of output 1 [2022-11-03 04:01:25,918 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 11 treesize of output 7 [2022-11-03 04:01:25,932 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 04:01:25,939 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 04:01:25,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,948 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 27 treesize of output 11 [2022-11-03 04:01:25,963 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 04:01:25,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:25,974 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 27 treesize of output 11 [2022-11-03 04:01:25,984 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 23 treesize of output 22 [2022-11-03 04:01:26,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:26,004 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 27 treesize of output 11 [2022-11-03 04:01:26,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:26,025 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:01:26,026 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 32 treesize of output 34 [2022-11-03 04:01:26,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:26,049 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:01:26,050 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 32 treesize of output 38 [2022-11-03 04:01:26,234 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 9 [2022-11-03 04:01:26,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:26,256 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 11 treesize of output 7 [2022-11-03 04:01:26,262 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 15 treesize of output 1 [2022-11-03 04:01:26,270 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 15 treesize of output 1 [2022-11-03 04:01:26,332 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 04:01:26,339 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 04:01:26,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:26,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:26,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:26,358 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:26,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:26,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:26,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:26,439 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:26,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:26,470 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 04:01:26,483 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 04:01:26,513 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:28,947 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2046#(and (<= 0 |ULTIMATE.start_dll_update_at_#in~head#1.offset|) (<= 3 |ULTIMATE.start_dll_update_at_~data#1|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (or (not (<= (+ |ULTIMATE.start_dll_update_at_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_update_at_~head#1.base|))) (not (<= 0 |ULTIMATE.start_dll_update_at_~head#1.offset|))) (<= 3 |ULTIMATE.start_dll_update_at_#in~data#1|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_update_at_#in~data#1| 3) (<= |ULTIMATE.start_dll_update_at_~index#1| 0) (<= |ULTIMATE.start_dll_update_at_#in~head#1.offset| 0) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_dll_update_at_#in~index#1| 1) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 3 |ULTIMATE.start_main_~new_data~0#1|) (<= |ULTIMATE.start_dll_update_at_~data#1| 3) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= 1 |ULTIMATE.start_dll_update_at_#in~index#1|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= |ULTIMATE.start_main_~new_data~0#1| 3) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 04:01:28,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:01:28,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:01:28,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 29 [2022-11-03 04:01:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916040185] [2022-11-03 04:01:28,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 04:01:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 04:01:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1412, Unknown=2, NotChecked=154, Total=1722 [2022-11-03 04:01:28,950 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 04:01:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:31,838 INFO L93 Difference]: Finished difference Result 222 states and 249 transitions. [2022-11-03 04:01:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-03 04:01:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-03 04:01:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:31,840 INFO L225 Difference]: With dead ends: 222 [2022-11-03 04:01:31,840 INFO L226 Difference]: Without dead ends: 222 [2022-11-03 04:01:31,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=555, Invalid=3483, Unknown=2, NotChecked=250, Total=4290 [2022-11-03 04:01:31,842 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 449 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 403 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:31,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 440 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 921 Invalid, 0 Unknown, 403 Unchecked, 0.8s Time] [2022-11-03 04:01:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-03 04:01:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 74. [2022-11-03 04:01:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 66 states have (on average 1.378787878787879) internal successors, (91), 73 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 04:01:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2022-11-03 04:01:31,846 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 22 [2022-11-03 04:01:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:31,846 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2022-11-03 04:01:31,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 04:01:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2022-11-03 04:01:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 04:01:31,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:31,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:31,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:32,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 04:01:32,075 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2146006272, now seen corresponding path program 1 times [2022-11-03 04:01:32,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:32,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091059725] [2022-11-03 04:01:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:32,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 04:01:32,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:32,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091059725] [2022-11-03 04:01:32,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091059725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:32,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:32,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:32,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853828679] [2022-11-03 04:01:32,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:32,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:32,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:32,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:32,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:32,181 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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 04:01:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:32,286 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2022-11-03 04:01:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:32,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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 24 [2022-11-03 04:01:32,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:32,287 INFO L225 Difference]: With dead ends: 84 [2022-11-03 04:01:32,287 INFO L226 Difference]: Without dead ends: 84 [2022-11-03 04:01:32,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:01:32,288 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:32,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 23 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-03 04:01:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2022-11-03 04:01:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 74 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 04:01:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2022-11-03 04:01:32,292 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 24 [2022-11-03 04:01:32,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:32,292 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2022-11-03 04:01:32,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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 04:01:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2022-11-03 04:01:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 04:01:32,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:32,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:32,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 04:01:32,294 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2146006273, now seen corresponding path program 1 times [2022-11-03 04:01:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:32,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833295033] [2022-11-03 04:01:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:01:32,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833295033] [2022-11-03 04:01:32,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833295033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586055205] [2022-11-03 04:01:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:32,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:32,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:32,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 04:01:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:32,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:01:32,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 04:01:32,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:32,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586055205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:32,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:01:32,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-03 04:01:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889644353] [2022-11-03 04:01:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:32,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:32,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:01:32,593 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 04:01:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:32,637 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2022-11-03 04:01:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-03 04:01:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:32,638 INFO L225 Difference]: With dead ends: 73 [2022-11-03 04:01:32,638 INFO L226 Difference]: Without dead ends: 73 [2022-11-03 04:01:32,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:01:32,639 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:32,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 52 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-03 04:01:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-11-03 04:01:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.34375) internal successors, (86), 70 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2022-11-03 04:01:32,645 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 24 [2022-11-03 04:01:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:32,645 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2022-11-03 04:01:32,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 04:01:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2022-11-03 04:01:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 04:01:32,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:32,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:32,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 04:01:32,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1915897531, now seen corresponding path program 1 times [2022-11-03 04:01:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:32,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422589920] [2022-11-03 04:01:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:01:33,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:33,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422589920] [2022-11-03 04:01:33,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422589920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:33,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65058917] [2022-11-03 04:01:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:33,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:33,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:33,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 04:01:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:33,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:33,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:01:33,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:01:33,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65058917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:33,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1680728196] [2022-11-03 04:01:33,257 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-03 04:01:33,257 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:33,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:33,258 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:33,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:33,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,289 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 04:01:33,311 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 15 treesize of output 1 [2022-11-03 04:01:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,320 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 04:01:33,329 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 15 treesize of output 1 [2022-11-03 04:01:33,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 04:01:33,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,356 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 31 [2022-11-03 04:01:33,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 04:01:33,383 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 04:01:33,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 04:01:33,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,405 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 31 [2022-11-03 04:01:33,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,470 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 22 treesize of output 30 [2022-11-03 04:01:33,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,510 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 30 treesize of output 21 [2022-11-03 04:01:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,526 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 30 treesize of output 21 [2022-11-03 04:01:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,539 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 04:01:33,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,569 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 28 treesize of output 30 [2022-11-03 04:01:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,580 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 28 treesize of output 30 [2022-11-03 04:01:33,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,596 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 04:01:33,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,630 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 37 treesize of output 42 [2022-11-03 04:01:33,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,662 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 37 treesize of output 42 [2022-11-03 04:01:33,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,683 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 04:01:33,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:33,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:01:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:33,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:01:33,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,780 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 04:01:33,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:33,993 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 04:01:33,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 29 treesize of output 43 [2022-11-03 04:01:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,039 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 04:01:34,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,054 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 04:01:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,073 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 04:01:34,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,114 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 04:01:34,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,131 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 04:01:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,145 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 04:01:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,184 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 04:01:34,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,205 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 41 treesize of output 46 [2022-11-03 04:01:34,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,226 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 41 treesize of output 46 [2022-11-03 04:01:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:34,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,306 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 04:01:34,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:34,389 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 9 [2022-11-03 04:01:34,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:34,425 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 11 treesize of output 7 [2022-11-03 04:01:34,432 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 15 treesize of output 1 [2022-11-03 04:01:34,439 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 15 treesize of output 1 [2022-11-03 04:01:34,455 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 04:01:34,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,464 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 27 treesize of output 11 [2022-11-03 04:01:34,471 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 04:01:34,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,490 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 27 treesize of output 11 [2022-11-03 04:01:34,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 04:01:34,509 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 04:01:34,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:34,542 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:01:34,542 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 32 treesize of output 34 [2022-11-03 04:01:34,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:34,566 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:01:34,567 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 32 treesize of output 38 [2022-11-03 04:01:34,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,580 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 27 treesize of output 11 [2022-11-03 04:01:34,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:34,639 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 9 [2022-11-03 04:01:34,657 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 15 treesize of output 1 [2022-11-03 04:01:34,664 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 15 treesize of output 1 [2022-11-03 04:01:34,670 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 11 treesize of output 7 [2022-11-03 04:01:34,682 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 04:01:34,689 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 04:01:34,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 04:01:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,714 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 27 treesize of output 11 [2022-11-03 04:01:34,721 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 04:01:34,731 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 04:01:34,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:34,756 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 27 treesize of output 11 [2022-11-03 04:01:34,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:34,782 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:01:34,783 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 32 treesize of output 38 [2022-11-03 04:01:34,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:34,817 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:01:34,817 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 32 treesize of output 34 [2022-11-03 04:01:34,920 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:34,922 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:34,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:35,001 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 04:01:35,009 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 04:01:35,017 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 04:01:35,142 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 04:01:35,149 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 11 treesize of output 7 [2022-11-03 04:01:35,156 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 04:01:35,237 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 04:01:35,244 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 04:01:35,252 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 04:01:35,325 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 9 [2022-11-03 04:01:35,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:35,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 04:01:35,352 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 15 treesize of output 1 [2022-11-03 04:01:35,359 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 11 treesize of output 7 [2022-11-03 04:01:35,416 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 13 treesize of output 9 [2022-11-03 04:01:35,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:35,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:35,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:35,435 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:35,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:35,461 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 04:01:35,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:35,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:35,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:35,516 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:35,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:35,542 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 23 treesize of output 22 [2022-11-03 04:01:35,562 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 04:01:35,592 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:37,702 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2959#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (not (= |ULTIMATE.start_dll_destroy_~head#1.base| 0)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_destroy_~head#1.offset| |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_dll_destroy_#in~head#1.base| |ULTIMATE.start_dll_destroy_~head#1.base|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (= |ULTIMATE.start_dll_destroy_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |#NULL.base| 0) (not (<= (+ |ULTIMATE.start_dll_destroy_~head#1.offset| 8) (select |#length| |ULTIMATE.start_dll_destroy_~head#1.base|))))' at error location [2022-11-03 04:01:37,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:01:37,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:01:37,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2022-11-03 04:01:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184349581] [2022-11-03 04:01:37,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:37,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:01:37,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:01:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-11-03 04:01:37,704 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 04:01:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:37,741 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2022-11-03 04:01:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-03 04:01:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:37,744 INFO L225 Difference]: With dead ends: 76 [2022-11-03 04:01:37,744 INFO L226 Difference]: Without dead ends: 76 [2022-11-03 04:01:37,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:01:37,745 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 75 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:37,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 48 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-03 04:01:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-11-03 04:01:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 67 states have (on average 1.328358208955224) internal successors, (89), 73 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 04:01:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2022-11-03 04:01:37,748 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 26 [2022-11-03 04:01:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:37,748 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2022-11-03 04:01:37,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 04:01:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2022-11-03 04:01:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 04:01:37,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:37,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:37,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 04:01:37,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash 622829996, now seen corresponding path program 1 times [2022-11-03 04:01:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:37,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124148076] [2022-11-03 04:01:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:01:38,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124148076] [2022-11-03 04:01:38,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124148076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033881350] [2022-11-03 04:01:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:38,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:38,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:38,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:38,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 04:01:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:38,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:01:38,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:01:38,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:01:38,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033881350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:38,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702684536] [2022-11-03 04:01:38,386 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 04:01:38,386 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:38,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:38,387 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:38,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:38,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,415 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 04:01:38,433 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 15 treesize of output 1 [2022-11-03 04:01:38,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,442 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 04:01:38,451 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 15 treesize of output 1 [2022-11-03 04:01:38,466 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 04:01:38,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,477 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 31 [2022-11-03 04:01:38,488 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 04:01:38,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,507 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 31 [2022-11-03 04:01:38,517 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 04:01:38,526 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 04:01:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,575 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 04:01:38,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 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 04:01:38,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,622 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 04:01:38,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,637 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 04:01:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,675 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 04:01:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,688 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 04:01:38,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,702 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 04:01:38,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,729 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 04:01:38,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,748 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 41 treesize of output 46 [2022-11-03 04:01:38,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,767 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 41 treesize of output 46 [2022-11-03 04:01:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,815 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 04:01:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:38,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:38,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:39,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,058 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 04:01:39,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,091 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 04:01:39,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,106 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 04:01:39,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,127 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 04:01:39,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,152 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 04:01:39,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,175 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 04:01:39,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 04:01:39,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,217 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 41 treesize of output 46 [2022-11-03 04:01:39,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,239 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 41 treesize of output 46 [2022-11-03 04:01:39,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,260 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 04:01:39,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:39,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:39,340 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 04:01:39,567 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:39,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:39,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:39,656 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 04:01:39,664 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 04:01:39,672 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 04:01:39,783 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 04:01:39,790 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 04:01:39,797 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 04:01:39,868 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 15 treesize of output 1 [2022-11-03 04:01:39,875 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 04:01:39,882 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 04:01:39,917 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 9 [2022-11-03 04:01:39,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:39,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 04:01:39,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:01:39,952 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 15 treesize of output 1 [2022-11-03 04:01:40,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:40,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:40,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:40,026 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:40,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:40,053 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 04:01:40,064 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 04:01:40,102 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 04:01:40,110 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 04:01:40,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:40,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:40,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:40,129 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:40,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:40,166 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:42,452 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3290#(and (<= 0 |ULTIMATE.start_dll_update_at_#in~head#1.offset|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_update_at_#in~data#1| 3) (<= |ULTIMATE.start_dll_update_at_~index#1| 0) (<= |ULTIMATE.start_dll_update_at_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_dll_update_at_#in~index#1| 1) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_update_at_~data#1| 3) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (not (= (select |#valid| |ULTIMATE.start_dll_update_at_~head#1.base|) 1)) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= |ULTIMATE.start_main_~new_data~0#1| 3) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 04:01:42,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:01:42,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:01:42,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2022-11-03 04:01:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268321589] [2022-11-03 04:01:42,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:42,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:01:42,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:01:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-03 04:01:42,454 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 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 04:01:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:42,521 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2022-11-03 04:01:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:42,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 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 27 [2022-11-03 04:01:42,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:42,522 INFO L225 Difference]: With dead ends: 68 [2022-11-03 04:01:42,523 INFO L226 Difference]: Without dead ends: 68 [2022-11-03 04:01:42,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-11-03 04:01:42,524 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:42,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 75 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-03 04:01:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2022-11-03 04:01:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.280701754385965) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 04:01:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2022-11-03 04:01:42,529 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 27 [2022-11-03 04:01:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:42,534 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2022-11-03 04:01:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 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 04:01:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2022-11-03 04:01:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 04:01:42,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:42,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:42,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:42,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:42,739 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash 86652824, now seen corresponding path program 2 times [2022-11-03 04:01:42,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:42,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561182276] [2022-11-03 04:01:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:01:42,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:42,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561182276] [2022-11-03 04:01:42,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561182276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:42,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571912151] [2022-11-03 04:01:42,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:01:42,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:42,804 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:42,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 04:01:42,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:01:42,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:01:42,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 04:01:43,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:43,038 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:01:43,038 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 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-03 04:01:43,069 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 04:01:43,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 04:01:43,104 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 04:01:43,109 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 04:01:43,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 30 treesize of output 12 [2022-11-03 04:01:43,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 [2022-11-03 04:01:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:01:43,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:43,557 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 14 treesize of output 10 [2022-11-03 04:01:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:01:43,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571912151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:43,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2066451239] [2022-11-03 04:01:43,579 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 04:01:43,579 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:43,580 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:43,580 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:43,580 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:43,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,601 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 04:01:43,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,621 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 04:01:43,629 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 15 treesize of output 1 [2022-11-03 04:01:43,636 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 15 treesize of output 1 [2022-11-03 04:01:43,659 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 04:01:43,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,673 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 31 [2022-11-03 04:01:43,685 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 04:01:43,700 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 04:01:43,709 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 04:01:43,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,722 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 31 [2022-11-03 04:01:43,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,773 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 04:01:43,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,815 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 04:01:43,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,840 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 04:01:43,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,854 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 04:01:43,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,882 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 04:01:43,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,903 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 04:01:43,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,922 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 04:01:43,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,943 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 41 treesize of output 46 [2022-11-03 04:01:43,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,961 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 04:01:43,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:43,975 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 41 treesize of output 46 [2022-11-03 04:01:44,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,012 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 04:01:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:44,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:44,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,248 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 04:01:44,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,295 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 04:01:44,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,308 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 04:01:44,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,323 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 04:01:44,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,349 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 04:01:44,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,364 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 04:01:44,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,377 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 04:01:44,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,398 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 41 treesize of output 46 [2022-11-03 04:01:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,411 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 41 treesize of output 46 [2022-11-03 04:01:44,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,430 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 04:01:44,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:44,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:44,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,507 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 04:01:44,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:44,773 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 9 [2022-11-03 04:01:44,791 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 11 treesize of output 7 [2022-11-03 04:01:44,798 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 15 treesize of output 1 [2022-11-03 04:01:44,803 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 15 treesize of output 1 [2022-11-03 04:01:44,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:44,884 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:44,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:44,913 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 04:01:44,927 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 04:01:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:44,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:44,987 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:44,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:45,013 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 04:01:45,024 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 04:01:45,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:47,851 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3628#(and (<= 0 |ULTIMATE.start_dll_update_at_#in~head#1.offset|) (<= 3 |ULTIMATE.start_dll_update_at_~data#1|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (or (not (<= (+ |ULTIMATE.start_dll_update_at_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_update_at_~head#1.base|))) (not (<= 0 |ULTIMATE.start_dll_update_at_~head#1.offset|))) (<= 3 |ULTIMATE.start_dll_update_at_#in~data#1|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= |ULTIMATE.start_dll_update_at_#in~data#1| 3) (<= |ULTIMATE.start_dll_update_at_~index#1| 0) (<= |ULTIMATE.start_dll_update_at_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_dll_update_at_#in~index#1| 1) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 3 |ULTIMATE.start_main_~new_data~0#1|) (<= |ULTIMATE.start_dll_update_at_~data#1| 3) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= 1 |ULTIMATE.start_dll_update_at_#in~index#1|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= |ULTIMATE.start_main_~new_data~0#1| 3) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 04:01:47,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:01:47,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:01:47,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 10] total 23 [2022-11-03 04:01:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506672082] [2022-11-03 04:01:47,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:47,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 04:01:47,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 04:01:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 04:01:47,854 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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 04:01:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:48,202 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-11-03 04:01:48,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:48,205 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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) Word has length 29 [2022-11-03 04:01:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:48,205 INFO L225 Difference]: With dead ends: 54 [2022-11-03 04:01:48,205 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 04:01:48,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 04:01:48,207 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 154 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:48,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 110 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 04:01:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-03 04:01:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2291666666666667) 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 04:01:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2022-11-03 04:01:48,209 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 29 [2022-11-03 04:01:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:48,210 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2022-11-03 04:01:48,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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 04:01:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2022-11-03 04:01:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 04:01:48,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:48,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:48,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:48,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 04:01:48,415 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:48,416 INFO L85 PathProgramCache]: Analyzing trace with hash 447041307, now seen corresponding path program 2 times [2022-11-03 04:01:48,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:48,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539587508] [2022-11-03 04:01:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:48,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 04:01:48,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:48,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539587508] [2022-11-03 04:01:48,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539587508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:48,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:48,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312933467] [2022-11-03 04:01:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:48,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:48,619 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:48,732 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-11-03 04:01:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:48,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 04:01:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:48,733 INFO L225 Difference]: With dead ends: 60 [2022-11-03 04:01:48,733 INFO L226 Difference]: Without dead ends: 60 [2022-11-03 04:01:48,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:01:48,734 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 88 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:48,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 10 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:48,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-03 04:01:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2022-11-03 04:01:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 54 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 04:01:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-03 04:01:48,736 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 29 [2022-11-03 04:01:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:48,736 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-03 04:01:48,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-03 04:01:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 04:01:48,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:48,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 04:01:48,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash 447042594, now seen corresponding path program 1 times [2022-11-03 04:01:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:48,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538925289] [2022-11-03 04:01:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:48,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 04:01:48,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:48,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538925289] [2022-11-03 04:01:48,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538925289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:48,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:48,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:01:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748091949] [2022-11-03 04:01:48,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:48,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:48,827 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:48,914 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2022-11-03 04:01:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:48,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 04:01:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:48,915 INFO L225 Difference]: With dead ends: 58 [2022-11-03 04:01:48,915 INFO L226 Difference]: Without dead ends: 58 [2022-11-03 04:01:48,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:01:48,916 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:48,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 22 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-03 04:01:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-11-03 04:01:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.183673469387755) internal successors, (58), 54 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 04:01:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-11-03 04:01:48,918 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 29 [2022-11-03 04:01:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:48,919 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-11-03 04:01:48,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-11-03 04:01:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 04:01:48,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:48,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 04:01:48,920 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash 870001447, now seen corresponding path program 3 times [2022-11-03 04:01:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:48,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304468170] [2022-11-03 04:01:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:01:49,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304468170] [2022-11-03 04:01:49,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304468170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217443799] [2022-11-03 04:01:49,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 04:01:49,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:49,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:49,019 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:49,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 04:01:49,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 04:01:49,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:01:49,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:01:49,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:01:49,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:49,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217443799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:49,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:01:49,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-03 04:01:49,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835374032] [2022-11-03 04:01:49,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:49,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:49,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:49,254 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:49,274 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2022-11-03 04:01:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:01:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 04:01:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:49,275 INFO L225 Difference]: With dead ends: 41 [2022-11-03 04:01:49,275 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 04:01:49,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:49,276 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:49,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:01:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 04:01:49,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-03 04:01:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 04:01:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-11-03 04:01:49,278 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 30 [2022-11-03 04:01:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:49,279 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-11-03 04:01:49,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:01:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-11-03 04:01:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 04:01:49,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:49,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:49,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:49,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:49,493 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:49,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 109991057, now seen corresponding path program 1 times [2022-11-03 04:01:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:49,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439181246] [2022-11-03 04:01:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 04:01:49,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:49,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439181246] [2022-11-03 04:01:49,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439181246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:49,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:49,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:49,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582583515] [2022-11-03 04:01:49,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:01:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:01:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:01:49,631 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 04:01:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:49,724 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2022-11-03 04:01:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:49,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-03 04:01:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:49,725 INFO L225 Difference]: With dead ends: 42 [2022-11-03 04:01:49,725 INFO L226 Difference]: Without dead ends: 42 [2022-11-03 04:01:49,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:01:49,726 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 69 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:49,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 10 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:01:49,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-03 04:01:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-03 04:01:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.162162162162162) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 04:01:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-11-03 04:01:49,728 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 31 [2022-11-03 04:01:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:49,728 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-11-03 04:01:49,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 04:01:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-11-03 04:01:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 04:01:49,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:49,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:49,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 04:01:49,729 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:01:49,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:49,730 INFO L85 PathProgramCache]: Analyzing trace with hash -316296289, now seen corresponding path program 1 times [2022-11-03 04:01:49,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:49,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392843486] [2022-11-03 04:01:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:49,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:01:51,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:51,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392843486] [2022-11-03 04:01:51,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392843486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:51,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033025323] [2022-11-03 04:01:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:51,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:51,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:51,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:51,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 04:01:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:51,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-03 04:01:51,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:51,403 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 04:01:51,450 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 04:01:51,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 04:01:51,491 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 04:01:51,529 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 23 treesize of output 22 [2022-11-03 04:01:51,597 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:01:51,597 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 32 treesize of output 33 [2022-11-03 04:01:51,833 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:01:51,833 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 39 treesize of output 38 [2022-11-03 04:01:51,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:51,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:51,954 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 36 treesize of output 34 [2022-11-03 04:01:52,069 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:52,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 32 [2022-11-03 04:01:52,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 04:01:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:01:52,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:54,044 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int) (v_ArrVal_1576 Int)) (or (= (select (store |c_#valid| |c_ULTIMATE.start_main_~s~0#1.base| 0) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4)) 1) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) is different from false [2022-11-03 04:01:54,057 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:54,057 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 37 treesize of output 41 [2022-11-03 04:01:54,080 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_main_~s~0#1.base|))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_dll_update_at_~head#1.base|)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|)))) is different from false [2022-11-03 04:01:54,116 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_main_~s~0#1.base|))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))))) is different from false [2022-11-03 04:01:54,150 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))))) is different from false [2022-11-03 04:01:54,170 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|) (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) .cse0)))))) is different from false [2022-11-03 04:01:54,192 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4)))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))))) is different from false [2022-11-03 04:01:54,214 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int) (v_ArrVal_1573 (Array Int Int))) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1573))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2))) (= (select (store (select (store .cse0 .cse1 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) .cse1)))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int) (v_ArrVal_1573 (Array Int Int))) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1573))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) v_ArrVal_1574)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4)))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))))) is different from false [2022-11-03 04:01:54,919 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int) (v_ArrVal_1573 (Array Int Int))) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (let ((.cse1 (store .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1573))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2))) (= .cse0 (select (store (select (store .cse1 .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4))))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int) (v_ArrVal_1573 (Array Int Int))) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= (select (store (select (let ((.cse4 (store .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1573))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) v_ArrVal_1574)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))))) is different from false [2022-11-03 04:01:54,937 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:54,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 55 [2022-11-03 04:01:54,942 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 238 treesize of output 214 [2022-11-03 04:01:54,950 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 254 treesize of output 246 [2022-11-03 04:01:54,964 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:54,965 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 274 treesize of output 234 [2022-11-03 04:01:54,985 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:54,986 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 266 treesize of output 224 [2022-11-03 04:01:55,238 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-03 04:01:55,239 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 1 [2022-11-03 04:01:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-03 04:01:55,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033025323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1354350488] [2022-11-03 04:01:55,409 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-03 04:01:55,409 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:55,409 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:55,409 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:55,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:55,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,434 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 04:01:55,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,458 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 04:01:55,467 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 15 treesize of output 1 [2022-11-03 04:01:55,474 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 15 treesize of output 1 [2022-11-03 04:01:55,491 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 04:01:55,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,502 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 31 [2022-11-03 04:01:55,512 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 04:01:55,530 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 04:01:55,539 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 04:01:55,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,552 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 31 [2022-11-03 04:01:55,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,607 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 04:01:55,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,640 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 34 treesize of output 25 [2022-11-03 04:01:55,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,655 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 04:01:55,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,668 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 04:01:55,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,699 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 04:01:55,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,712 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 04:01:55,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,731 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 04:01:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,761 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 41 treesize of output 46 [2022-11-03 04:01:55,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,782 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 04:01:55,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,796 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 41 treesize of output 46 [2022-11-03 04:01:55,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:55,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,866 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 04:01:55,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:56,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,101 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 04:01:56,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,141 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 04:01:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,154 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 04:01:56,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,171 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 04:01:56,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,201 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 04:01:56,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,215 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 04:01:56,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,227 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 04:01:56,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,260 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 41 treesize of output 46 [2022-11-03 04:01:56,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,273 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 41 treesize of output 46 [2022-11-03 04:01:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,295 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 04:01:56,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:56,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:01:56,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,383 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 04:01:56,608 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:56,611 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:56,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:01:56,681 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 04:01:56,690 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 04:01:56,698 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 04:01:56,803 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 04:01:56,809 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 04:01:56,819 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 04:01:56,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 04:01:56,900 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 04:01:56,906 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 04:01:56,998 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 9 [2022-11-03 04:01:57,060 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:01:57,125 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:01:57,191 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 9 [2022-11-03 04:01:57,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:01:57,210 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 15 treesize of output 1 [2022-11-03 04:01:57,216 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 15 treesize of output 1 [2022-11-03 04:01:57,223 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 11 treesize of output 7 [2022-11-03 04:01:57,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:57,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:57,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:57,296 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:57,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:57,322 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 04:01:57,332 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 04:01:57,382 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 04:01:57,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:57,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:57,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:01:57,402 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:01:57,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:01:57,430 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 23 treesize of output 22 [2022-11-03 04:01:57,459 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:02:01,648 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4531#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_destroy_~head#1.base|) 1)) (or (not (= |ULTIMATE.start_dll_destroy_~head#1.base| 0)) (not (= |ULTIMATE.start_dll_destroy_~head#1.offset| 0))) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_destroy_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 04:02:01,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:02:01,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:02:01,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 48 [2022-11-03 04:02:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942462241] [2022-11-03 04:02:01,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:01,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 04:02:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 04:02:01,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=3174, Unknown=8, NotChecked=968, Total=4422 [2022-11-03 04:02:01,651 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 49 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 04:02:10,244 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 50 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:02:19,005 WARN L234 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 62 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:02:19,560 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (let ((.cse0 (select .cse1 .cse2))) (and (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (= .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= (select .cse1 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4)))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) is different from false [2022-11-03 04:02:20,032 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (and (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (= (select .cse1 8) 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 4)) (not (= 0 |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|) (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1574) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) .cse0)))) (not (= (select .cse1 4) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1)))) is different from false [2022-11-03 04:02:20,698 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse1 (select .cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select .cse0 4))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (= |c_ULTIMATE.start_main_~s~0#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) 4)) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= .cse1 (select (store (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (= (select .cse0 8) 0)))) is different from false [2022-11-03 04:02:21,232 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) .cse2)) (.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select .cse0 4))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0) (= |c_ULTIMATE.start_main_~s~0#1.offset| |c_ULTIMATE.start_dll_update_at_~head#1.offset|) (not (= .cse1 |c_ULTIMATE.start_dll_update_at_~head#1.base|)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_main_~s~0#1.base|))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= .cse1 (select (store (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (= |c_ULTIMATE.start_main_~s~0#1.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (= |c_ULTIMATE.start_dll_update_at_~head#1.offset| 0) (= (select .cse0 8) 0) (= |c_ULTIMATE.start_main_~s~0#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_update_at_~head#1.base|) .cse2))))) is different from false [2022-11-03 04:02:21,691 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select .cse0 4))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) |c_ULTIMATE.start_dll_update_at_~head#1.base|) (= (select .cse0 8) 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_main_~s~0#1.base|))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int)) (or (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1576 Int)) (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1574) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4) |c_ULTIMATE.start_dll_update_at_~head#1.base|)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))))) is different from false [2022-11-03 04:02:22,183 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select .cse0 4))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0) (= (select |c_#valid| (select .cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) 1) (= (select .cse0 8) 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_48| Int) (v_ArrVal_1576 Int)) (or (= (select (store |c_#valid| |c_ULTIMATE.start_main_~s~0#1.base| 0) (select (store .cse0 |v_ULTIMATE.start_dll_update_at_~head#1.offset_48| v_ArrVal_1576) 4)) 1) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_48|))))) is different from false [2022-11-03 04:02:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:22,734 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2022-11-03 04:02:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 04:02:22,737 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 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 04:02:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:22,738 INFO L225 Difference]: With dead ends: 50 [2022-11-03 04:02:22,738 INFO L226 Difference]: Without dead ends: 50 [2022-11-03 04:02:22,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=486, Invalid=4812, Unknown=14, NotChecked=2170, Total=7482 [2022-11-03 04:02:22,740 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 117 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:22,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 32 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 575 Invalid, 0 Unknown, 374 Unchecked, 0.4s Time] [2022-11-03 04:02:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-03 04:02:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2022-11-03 04:02:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.2) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 04:02:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-11-03 04:02:22,742 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 34 [2022-11-03 04:02:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:22,743 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-11-03 04:02:22,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 04:02:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-11-03 04:02:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 04:02:22,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:22,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:22,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:22,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-03 04:02:22,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:02:22,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash -316296288, now seen corresponding path program 1 times [2022-11-03 04:02:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:22,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125333959] [2022-11-03 04:02:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:02:24,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:24,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125333959] [2022-11-03 04:02:24,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125333959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:24,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959616001] [2022-11-03 04:02:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:24,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:24,291 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:24,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 04:02:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:24,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-03 04:02:24,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:24,509 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 04:02:24,580 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 04:02:24,580 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 04:02:24,623 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 04:02:24,629 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 04:02:24,671 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 04:02:24,678 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 04:02:24,711 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:02:24,711 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 46 treesize of output 45 [2022-11-03 04:02:24,717 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 24 [2022-11-03 04:02:24,970 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:02:24,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2022-11-03 04:02:24,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:24,979 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 20 treesize of output 22 [2022-11-03 04:02:25,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:25,052 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 04:02:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:25,056 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 04:02:25,163 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:25,163 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 17 treesize of output 15 [2022-11-03 04:02:25,176 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:25,177 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 27 treesize of output 21 [2022-11-03 04:02:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:02:25,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:26,679 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (forall ((v_ArrVal_1709 Int)) (<= 0 (+ (select (store .cse0 |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4) 4))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int) (v_ArrVal_1710 Int)) (<= (+ (select (store .cse0 |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4) 8) (select |c_#length| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1710) 4)))))))) is different from false [2022-11-03 04:02:26,699 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1708 (Array Int Int)) (v_ArrVal_1707 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (forall ((v_ArrVal_1709 Int) (v_ArrVal_1710 Int)) (<= (+ 8 (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1708) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4)) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1707) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1710) 4)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|))) (forall ((v_ArrVal_1708 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int)) (<= 0 (+ 4 (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1708) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4))))))) is different from false [2022-11-03 04:02:26,736 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (and (forall ((v_ArrVal_1708 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int)) (<= 0 (+ (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4) 4))))) (forall ((v_ArrVal_1708 (Array Int Int)) (v_ArrVal_1707 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int) (v_ArrVal_1710 Int)) (<= (+ 8 (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4)) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1707) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1710) 4)))))))) is different from false [2022-11-03 04:02:26,775 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (and (forall ((v_ArrVal_1708 (Array Int Int)) (v_ArrVal_1707 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int) (v_ArrVal_1710 Int)) (<= (+ 8 (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4)) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1707) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1710) 4)))))) (forall ((v_ArrVal_1708 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int)) (<= 0 (+ 4 (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4)))))))) is different from false [2022-11-03 04:02:26,795 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (and (forall ((v_ArrVal_1708 (Array Int Int)) (v_ArrVal_1707 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (forall ((v_ArrVal_1709 Int) (v_ArrVal_1710 Int)) (<= (+ 8 (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4)) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1707) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1710) 4)))) (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|))) (forall ((v_ArrVal_1708 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int)) (<= 0 (+ (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4) 4))))))) is different from false [2022-11-03 04:02:26,815 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (and (forall ((v_ArrVal_1708 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int)) (<= 0 (+ (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4) 4))))) (forall ((v_ArrVal_1708 (Array Int Int)) (v_ArrVal_1707 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int) (v_ArrVal_1710 Int)) (<= (+ 8 (select (store (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1708) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4)) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1707) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1710) 4)))))))) is different from false [2022-11-03 04:02:26,835 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:26,835 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 96 treesize of output 100 [2022-11-03 04:02:26,912 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_prenex_5 Int) (v_ArrVal_1710 Int) (v_prenex_4 (Array Int Int)) (v_ArrVal_1707 (Array Int Int))) (or (= (select (store (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1) v_ArrVal_1707)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) v_prenex_5 v_ArrVal_1710) 4) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| v_prenex_5))) (forall ((v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_6 (Array Int Int))) (or (< (select (store (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_6) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1) v_prenex_3) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) v_prenex_5 v_prenex_2) 4) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5)) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| v_prenex_5))) (forall ((v_ArrVal_1709 Int) (v_ArrVal_1708 (Array Int Int)) (v_ArrVal_1706 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int) (v_ArrVal_1705 (Array Int Int))) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (<= 0 (+ 4 (select (store (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1705) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1706) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1) v_ArrVal_1708) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4))))))) is different from false [2022-11-03 04:02:26,970 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse3 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 (Array Int Int)) (v_ArrVal_1701 Int) (v_prenex_4 (Array Int Int)) (v_prenex_6 (Array Int Int)) (v_ArrVal_1702 Int)) (or (< (select (store (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_1701)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_6) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse2 .cse1 v_ArrVal_1702)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse3) v_prenex_3) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) v_prenex_5 v_prenex_2) 4) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5)) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| v_prenex_5))) (forall ((v_prenex_5 Int) (v_ArrVal_1710 Int) (v_prenex_4 (Array Int Int)) (v_ArrVal_1707 (Array Int Int)) (v_ArrVal_1702 Int)) (or (= (select (store (select (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse2 .cse1 v_ArrVal_1702)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse3) v_ArrVal_1707)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) v_prenex_5 v_ArrVal_1710) 4) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| v_prenex_5))) (forall ((v_ArrVal_1709 Int) (v_ArrVal_1708 (Array Int Int)) (v_ArrVal_1701 Int) (v_ArrVal_1706 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int) (v_ArrVal_1705 (Array Int Int)) (v_ArrVal_1702 Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (<= 0 (+ 4 (select (store (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_1701)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1705) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse2 .cse1 v_ArrVal_1702)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1706) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse3) v_ArrVal_1708) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4))))))) is different from false [2022-11-03 04:02:26,991 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:26,992 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 57 treesize of output 63 [2022-11-03 04:02:27,001 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:27,002 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 42 treesize of output 48 [2022-11-03 04:02:27,007 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 66 treesize of output 54 [2022-11-03 04:02:27,012 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 230 treesize of output 222 [2022-11-03 04:02:27,019 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 202 treesize of output 198 [2022-11-03 04:02:27,025 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 294 treesize of output 284 [2022-11-03 04:02:27,033 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 238 treesize of output 214 [2022-11-03 04:02:27,045 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:27,046 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 304 treesize of output 302 [2022-11-03 04:02:27,142 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:27,142 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 63 [2022-11-03 04:02:27,152 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:27,153 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 48 [2022-11-03 04:02:27,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:27,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 35 treesize of output 23 [2022-11-03 04:02:27,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:27,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 [2022-11-03 04:02:27,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,168 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-03 04:02:27,176 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-03 04:02:27,176 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 1 [2022-11-03 04:02:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-03 04:02:27,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959616001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:27,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450959830] [2022-11-03 04:02:27,374 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-03 04:02:27,376 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:02:27,376 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:02:27,377 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:02:27,377 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:02:27,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,406 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 04:02:27,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,424 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 04:02:27,431 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 15 treesize of output 1 [2022-11-03 04:02:27,440 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 15 treesize of output 1 [2022-11-03 04:02:27,457 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 04:02:27,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,467 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 31 [2022-11-03 04:02:27,476 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 04:02:27,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 04:02:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,503 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 31 [2022-11-03 04:02:27,513 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 04:02:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,577 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 22 treesize of output 30 [2022-11-03 04:02:27,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,614 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 30 treesize of output 21 [2022-11-03 04:02:27,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,629 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 04:02:27,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,644 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 30 treesize of output 21 [2022-11-03 04:02:27,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,673 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 04:02:27,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,685 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 28 treesize of output 30 [2022-11-03 04:02:27,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,703 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 28 treesize of output 30 [2022-11-03 04:02:27,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,734 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 04:02:27,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,750 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 37 treesize of output 42 [2022-11-03 04:02:27,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,763 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 37 treesize of output 42 [2022-11-03 04:02:27,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:27,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:02:27,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:27,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:02:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:27,868 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 04:02:28,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,092 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 04:02:28,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 29 treesize of output 43 [2022-11-03 04:02:28,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,148 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 04:02:28,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,168 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 04:02:28,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,181 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 04:02:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,209 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 04:02:28,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,226 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 04:02:28,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,244 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 04:02:28,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,287 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 41 treesize of output 46 [2022-11-03 04:02:28,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,303 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 41 treesize of output 46 [2022-11-03 04:02:28,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,321 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 04:02:28,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:28,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,392 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 04:02:28,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:28,449 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 9 [2022-11-03 04:02:28,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:28,467 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 15 treesize of output 1 [2022-11-03 04:02:28,472 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 11 treesize of output 7 [2022-11-03 04:02:28,479 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 15 treesize of output 1 [2022-11-03 04:02:28,489 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 04:02:28,496 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 04:02:28,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,504 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 27 treesize of output 11 [2022-11-03 04:02:28,517 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 04:02:28,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 04:02:28,534 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 04:02:28,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:28,568 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:02:28,569 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 32 treesize of output 38 [2022-11-03 04:02:28,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:28,590 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:02:28,590 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 32 treesize of output 34 [2022-11-03 04:02:28,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,601 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 27 treesize of output 11 [2022-11-03 04:02:28,645 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 9 [2022-11-03 04:02:28,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:28,663 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 11 treesize of output 7 [2022-11-03 04:02:28,669 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 15 treesize of output 1 [2022-11-03 04:02:28,676 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 15 treesize of output 1 [2022-11-03 04:02:28,689 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 04:02:28,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 04:02:28,704 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 04:02:28,718 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 04:02:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,727 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 27 treesize of output 11 [2022-11-03 04:02:28,735 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 04:02:28,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:28,765 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:02:28,766 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 32 treesize of output 38 [2022-11-03 04:02:28,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:28,786 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:02:28,786 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 32 treesize of output 34 [2022-11-03 04:02:28,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:28,799 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 27 treesize of output 11 [2022-11-03 04:02:28,900 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:28,902 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:28,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:28,984 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 04:02:28,992 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 04:02:29,000 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 04:02:29,090 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 04:02:29,097 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 04:02:29,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 04:02:29,177 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 04:02:29,185 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 04:02:29,192 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 04:02:29,276 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 9 [2022-11-03 04:02:29,352 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:02:29,450 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:02:29,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:29,520 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 9 [2022-11-03 04:02:29,536 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 11 treesize of output 7 [2022-11-03 04:02:29,543 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 15 treesize of output 1 [2022-11-03 04:02:29,550 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 15 treesize of output 1 [2022-11-03 04:02:29,589 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 04:02:29,607 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 04:02:29,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:29,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:29,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:29,627 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:02:29,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:02:29,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:29,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:29,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:29,705 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:02:29,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:02:29,730 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 04:02:29,742 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 04:02:29,771 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:02:33,100 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4934#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (or (not (= |ULTIMATE.start_dll_destroy_~head#1.base| 0)) (not (= |ULTIMATE.start_dll_destroy_~head#1.offset| 0))) (<= |ULTIMATE.start_dll_create_~data#1| 1) (or (not (<= 0 (+ |ULTIMATE.start_dll_destroy_~head#1.offset| 4))) (not (<= (+ |ULTIMATE.start_dll_destroy_~head#1.offset| 8) (select |#length| |ULTIMATE.start_dll_destroy_~head#1.base|)))) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_destroy_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 04:02:33,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:02:33,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:02:33,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 49 [2022-11-03 04:02:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515169269] [2022-11-03 04:02:33,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:33,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-03 04:02:33,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:33,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-03 04:02:33,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3281, Unknown=8, NotChecked=984, Total=4556 [2022-11-03 04:02:33,103 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 50 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 50 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 04:02:34,783 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse3 4))) (let ((.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|)) (.cse1 (select |c_#length| .cse0))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| .cse0)) (= 12 .cse1) (= (select .cse2 4) 0) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (forall ((v_ArrVal_1709 Int)) (<= 0 (+ (select (store .cse2 |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4) 4))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|))) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_56| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_56|) (forall ((v_ArrVal_1709 Int) (v_ArrVal_1710 Int)) (<= (+ (select (store .cse2 |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1709) 4) 8) (select |c_#length| (select (store .cse3 |v_ULTIMATE.start_dll_update_at_~head#1.offset_56| v_ArrVal_1710) 4)))))) (<= 12 .cse1))))) is different from false [2022-11-03 04:02:35,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:35,379 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2022-11-03 04:02:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 04:02:35,380 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 50 states have internal predecessors, (100), 0 states have call successors, (0), 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 04:02:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:35,380 INFO L225 Difference]: With dead ends: 51 [2022-11-03 04:02:35,380 INFO L226 Difference]: Without dead ends: 51 [2022-11-03 04:02:35,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1572 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=479, Invalid=4803, Unknown=10, NotChecked=1350, Total=6642 [2022-11-03 04:02:35,382 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 128 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:35,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 69 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 641 Invalid, 0 Unknown, 400 Unchecked, 0.4s Time] [2022-11-03 04:02:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-03 04:02:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-11-03 04:02:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.170731707317073) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 04:02:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2022-11-03 04:02:35,384 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 34 [2022-11-03 04:02:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:35,384 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2022-11-03 04:02:35,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 50 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 04:02:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2022-11-03 04:02:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 04:02:35,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:35,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:35,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:35,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-03 04:02:35,586 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:02:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash -316295001, now seen corresponding path program 1 times [2022-11-03 04:02:35,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:35,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932663208] [2022-11-03 04:02:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:35,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:02:36,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:36,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932663208] [2022-11-03 04:02:36,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932663208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:36,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211385329] [2022-11-03 04:02:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:36,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:36,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:36,503 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:36,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 04:02:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:36,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-03 04:02:36,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:36,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:36,775 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 04:02:36,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 04:02:36,824 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 04:02:36,866 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 23 treesize of output 22 [2022-11-03 04:02:36,925 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:02:36,925 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 42 treesize of output 41 [2022-11-03 04:02:37,178 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:02:37,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-03 04:02:37,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:37,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:37,252 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 35 treesize of output 33 [2022-11-03 04:02:37,357 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:37,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2022-11-03 04:02:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:02:37,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:38,004 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int)) (or (not (= (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|))) is different from false [2022-11-03 04:02:38,014 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int) (v_ArrVal_1838 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1838) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)))) is different from false [2022-11-03 04:02:38,028 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int) (v_ArrVal_1838 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (not (= (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)) v_ArrVal_1838) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)))) is different from false [2022-11-03 04:02:38,053 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int) (v_ArrVal_1838 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (not (= (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_1838) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)))) is different from false [2022-11-03 04:02:38,062 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int) (v_ArrVal_1838 (Array Int Int))) (or (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (not (= 0 (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) v_ArrVal_1838) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4))))) is different from false [2022-11-03 04:02:38,070 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int) (v_ArrVal_1838 (Array Int Int))) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (not (= (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) v_ArrVal_1838) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)))) is different from false [2022-11-03 04:02:38,080 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int) (v_ArrVal_1838 (Array Int Int)) (v_ArrVal_1837 (Array Int Int))) (or (not (= (select (store (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1837))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) v_ArrVal_1838)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|))) is different from false [2022-11-03 04:02:38,097 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int) (v_ArrVal_1838 (Array Int Int)) (v_ArrVal_1837 (Array Int Int))) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (not (= (select (store (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1837))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) v_ArrVal_1838)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)))) is different from false [2022-11-03 04:02:38,108 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:38,108 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 56 treesize of output 47 [2022-11-03 04:02:38,111 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 181 treesize of output 167 [2022-11-03 04:02:38,122 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:38,122 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 161 treesize of output 152 [2022-11-03 04:02:38,138 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:38,139 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 171 treesize of output 163 [2022-11-03 04:02:38,152 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 122 treesize of output 118 [2022-11-03 04:02:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-03 04:02:38,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211385329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:38,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [744623722] [2022-11-03 04:02:38,394 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-03 04:02:38,394 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:02:38,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:02:38,394 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:02:38,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:02:38,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,420 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 04:02:38,442 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 15 treesize of output 1 [2022-11-03 04:02:38,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,449 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 04:02:38,458 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 15 treesize of output 1 [2022-11-03 04:02:38,472 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 04:02:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,481 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 31 [2022-11-03 04:02:38,490 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 04:02:38,504 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 04:02:38,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,516 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 31 [2022-11-03 04:02:38,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 04:02:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,570 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 22 treesize of output 30 [2022-11-03 04:02:38,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,599 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 30 treesize of output 21 [2022-11-03 04:02:38,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,612 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 04:02:38,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,626 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 30 treesize of output 21 [2022-11-03 04:02:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 04:02:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,660 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 04:02:38,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,675 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 28 treesize of output 30 [2022-11-03 04:02:38,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,713 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 04:02:38,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,732 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 37 treesize of output 42 [2022-11-03 04:02:38,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-03 04:02:38,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:38,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:02:38,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,805 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 04:02:38,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:38,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 04:02:38,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:38,997 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 04:02:39,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,029 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 04:02:39,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,042 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 04:02:39,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,056 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 04:02:39,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,088 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 04:02:39,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,103 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 04:02:39,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,118 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 04:02:39,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,141 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 41 treesize of output 46 [2022-11-03 04:02:39,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,159 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 04:02:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,173 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 41 treesize of output 46 [2022-11-03 04:02:39,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:39,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:39,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:39,245 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 04:02:39,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:39,431 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:39,434 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:39,505 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 04:02:39,513 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 04:02:39,524 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 04:02:39,599 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 04:02:39,607 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 04:02:39,617 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 04:02:39,676 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 04:02:39,683 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 04:02:39,691 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 11 treesize of output 7 [2022-11-03 04:02:39,753 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 9 [2022-11-03 04:02:39,818 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:02:39,918 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:02:39,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:39,987 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 9 [2022-11-03 04:02:40,002 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 15 treesize of output 1 [2022-11-03 04:02:40,013 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 15 treesize of output 1 [2022-11-03 04:02:40,020 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 11 treesize of output 7 [2022-11-03 04:02:40,076 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 04:02:40,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:40,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:40,094 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:02:40,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:02:40,119 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 04:02:40,145 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 04:02:40,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:40,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:40,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:40,175 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:02:40,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:02:40,202 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 04:02:40,230 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:02:44,248 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5326#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (= |ULTIMATE.start_dll_destroy_~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_destroy_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |ULTIMATE.start_dll_destroy_~head#1.base| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_#res#1| 0) (= |#NULL.base| 0))' at error location [2022-11-03 04:02:44,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:02:44,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:02:44,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 19] total 45 [2022-11-03 04:02:44,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955373513] [2022-11-03 04:02:44,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:44,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 04:02:44,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 04:02:44,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2818, Unknown=8, NotChecked=920, Total=4032 [2022-11-03 04:02:44,251 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 45 states, 45 states have (on average 2.0) internal successors, (90), 45 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 04:02:45,162 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse1 4))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| .cse0)) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (not (= .cse0 0)) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int) (v_ArrVal_1839 Int)) (or (not (= (select (store .cse1 |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_ArrVal_1839) 4) 0)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|))) (= (select .cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) |c_ULTIMATE.start_dll_update_at_~head#1.base|) (= (select .cse1 8) 0)))) is different from false [2022-11-03 04:02:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:45,478 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2022-11-03 04:02:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 04:02:45,479 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 45 states have internal predecessors, (90), 0 states have call successors, (0), 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 04:02:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:45,479 INFO L225 Difference]: With dead ends: 49 [2022-11-03 04:02:45,479 INFO L226 Difference]: Without dead ends: 49 [2022-11-03 04:02:45,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=440, Invalid=4009, Unknown=9, NotChecked=1242, Total=5700 [2022-11-03 04:02:45,483 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 133 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:45,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 90 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 372 Invalid, 0 Unknown, 361 Unchecked, 0.2s Time] [2022-11-03 04:02:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-03 04:02:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-11-03 04:02:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.146341463414634) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 04:02:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-11-03 04:02:45,485 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 34 [2022-11-03 04:02:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:45,485 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-11-03 04:02:45,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 45 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 04:02:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-11-03 04:02:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 04:02:45,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:45,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:45,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:45,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-03 04:02:45,699 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:02:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash 981969878, now seen corresponding path program 1 times [2022-11-03 04:02:45,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593997740] [2022-11-03 04:02:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:02:46,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593997740] [2022-11-03 04:02:46,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593997740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641481883] [2022-11-03 04:02:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:46,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:46,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:46,608 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:46,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 04:02:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:46,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-03 04:02:46,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:46,827 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 04:02:46,878 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 04:02:46,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 04:02:46,924 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 04:02:46,962 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 23 treesize of output 22 [2022-11-03 04:02:47,025 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:02:47,025 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 43 treesize of output 42 [2022-11-03 04:02:47,277 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:02:47,277 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 37 treesize of output 36 [2022-11-03 04:02:47,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:47,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:47,351 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 36 treesize of output 34 [2022-11-03 04:02:47,450 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:47,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 32 [2022-11-03 04:02:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:02:47,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:48,176 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|) (< (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|))) is different from false [2022-11-03 04:02:48,184 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|) (< (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| v_ArrVal_1966) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|))) is different from false [2022-11-03 04:02:48,198 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)) v_ArrVal_1966) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|))) is different from false [2022-11-03 04:02:48,214 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|) (< (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_1966) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|))) is different from false [2022-11-03 04:02:48,223 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) v_ArrVal_1966) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|))) is different from false [2022-11-03 04:02:48,232 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) v_ArrVal_1966) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|))) is different from false [2022-11-03 04:02:48,242 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int)) (v_ArrVal_1964 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< (select (store (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1964))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) v_ArrVal_1966)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|))) is different from false [2022-11-03 04:02:48,259 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int)) (v_ArrVal_1964 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< (select (store (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1964))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) v_ArrVal_1966)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|))) is different from false [2022-11-03 04:02:48,274 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:48,275 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 55 treesize of output 46 [2022-11-03 04:02:48,279 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 296 treesize of output 276 [2022-11-03 04:02:48,285 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 300 treesize of output 292 [2022-11-03 04:02:48,303 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:48,304 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 328 treesize of output 310 [2022-11-03 04:02:48,330 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:48,331 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 250 treesize of output 230 [2022-11-03 04:02:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-03 04:02:48,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641481883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1772845434] [2022-11-03 04:02:48,730 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-03 04:02:48,730 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:02:48,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:02:48,730 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:02:48,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:02:48,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,759 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 04:02:48,775 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 15 treesize of output 1 [2022-11-03 04:02:48,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,783 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 04:02:48,792 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 15 treesize of output 1 [2022-11-03 04:02:48,809 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 04:02:48,817 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 04:02:48,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,827 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 31 [2022-11-03 04:02:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,847 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 31 [2022-11-03 04:02:48,856 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 04:02:48,867 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 04:02:48,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,919 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 04:02:48,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,948 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 04:02:48,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,962 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 04:02:48,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,976 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 04:02:48,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:48,995 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 04:02:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,014 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 04:02:49,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,038 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 04:02:49,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,060 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 41 treesize of output 46 [2022-11-03 04:02:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,078 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 04:02:49,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,091 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 41 treesize of output 46 [2022-11-03 04:02:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,125 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 04:02:49,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:49,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:49,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,337 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 04:02:49,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,370 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 04:02:49,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,384 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 04:02:49,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,401 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 04:02:49,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,432 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 04:02:49,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,443 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 04:02:49,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,460 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 04:02:49,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,489 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 04:02:49,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,503 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 41 treesize of output 46 [2022-11-03 04:02:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,519 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 41 treesize of output 46 [2022-11-03 04:02:49,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:49,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-03 04:02:49,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:49,588 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 04:02:49,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:49,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:49,775 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:02:49,848 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 11 treesize of output 7 [2022-11-03 04:02:49,859 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 04:02:49,866 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 04:02:49,944 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 11 treesize of output 7 [2022-11-03 04:02:49,954 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 04:02:49,961 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 04:02:50,020 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 04:02:50,027 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 04:02:50,037 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 04:02:50,114 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 9 [2022-11-03 04:02:50,188 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:02:50,288 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 04:02:50,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:50,344 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 9 [2022-11-03 04:02:50,358 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 11 treesize of output 7 [2022-11-03 04:02:50,364 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 15 treesize of output 1 [2022-11-03 04:02:50,372 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 15 treesize of output 1 [2022-11-03 04:02:50,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:50,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:50,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:50,430 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:02:50,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:02:50,455 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 04:02:50,472 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 04:02:50,517 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 04:02:50,525 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 23 treesize of output 22 [2022-11-03 04:02:50,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:50,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:50,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:50,543 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 04:02:50,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 184 [2022-11-03 04:02:50,586 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:02:54,634 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5726#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_destroy_#in~head#1.offset|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (not (< |ULTIMATE.start_dll_destroy_~head#1.base| |#StackHeapBarrier|)) (= |ULTIMATE.start_dll_destroy_~head#1.offset| 0) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_destroy_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-03 04:02:54,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:02:54,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:02:54,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 45 [2022-11-03 04:02:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778967601] [2022-11-03 04:02:54,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:54,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 04:02:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 04:02:54,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2817, Unknown=8, NotChecked=920, Total=4032 [2022-11-03 04:02:54,636 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 46 states, 45 states have (on average 2.088888888888889) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 04:02:56,202 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse1 4))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| .cse0)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_72| Int) (v_ArrVal_1967 Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_72|) (< (select (store .cse1 |v_ULTIMATE.start_dll_update_at_~head#1.offset_72| v_ArrVal_1967) 4) |c_#StackHeapBarrier|))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (= (select .cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) |c_ULTIMATE.start_dll_update_at_~head#1.base|) (= (select .cse1 8) 0)))) is different from false [2022-11-03 04:02:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:56,641 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2022-11-03 04:02:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 04:02:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.088888888888889) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 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 04:02:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:56,642 INFO L225 Difference]: With dead ends: 47 [2022-11-03 04:02:56,642 INFO L226 Difference]: Without dead ends: 47 [2022-11-03 04:02:56,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 74 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=461, Invalid=3988, Unknown=9, NotChecked=1242, Total=5700 [2022-11-03 04:02:56,644 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 140 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:56,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 92 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 451 Invalid, 0 Unknown, 408 Unchecked, 0.3s Time] [2022-11-03 04:02:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-03 04:02:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-03 04:02:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 04:02:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-11-03 04:02:56,645 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2022-11-03 04:02:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:56,645 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-11-03 04:02:56,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.088888888888889) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 04:02:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-11-03 04:02:56,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 04:02:56,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:56,646 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:56,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:56,847 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-03 04:02:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 842553914, now seen corresponding path program 2 times [2022-11-03 04:02:56,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:56,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356082173] [2022-11-03 04:02:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:02:58,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:58,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356082173] [2022-11-03 04:02:58,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356082173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:58,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573738415] [2022-11-03 04:02:58,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:02:58,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:58,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:58,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:58,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3961e722-d9f5-4281-b826-4281689fa3d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 04:02:59,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:02:59,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:02:59,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-03 04:02:59,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:59,044 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 04:02:59,075 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 04:02:59,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 04:02:59,095 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 04:02:59,101 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 04:02:59,127 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 04:02:59,127 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 04:02:59,174 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 04:02:59,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 04:02:59,191 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 21 treesize of output 20 [2022-11-03 04:02:59,199 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 21 treesize of output 20 [2022-11-03 04:02:59,248 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 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-03 04:02:59,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-03 04:02:59,293 INFO L356 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-11-03 04:02:59,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 52 [2022-11-03 04:02:59,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-11-03 04:02:59,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:59,650 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-03 04:02:59,650 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 2 case distinctions, treesize of input 96 treesize of output 59 [2022-11-03 04:02:59,675 INFO L356 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-03 04:02:59,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 61 [2022-11-03 04:02:59,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:59,802 INFO L356 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-03 04:02:59,802 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 2 case distinctions, treesize of input 61 treesize of output 48 [2022-11-03 04:02:59,808 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 0 case distinctions, treesize of input 42 treesize of output 34 [2022-11-03 04:02:59,811 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 7 treesize of output 3 [2022-11-03 04:03:00,154 INFO L356 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2022-11-03 04:03:00,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 45 [2022-11-03 04:03:00,169 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:00,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 04:03:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:03:00,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:03:27,554 WARN L234 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:33,299 WARN L234 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:41,635 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:52,410 WARN L234 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:54,487 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4 |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (and (forall ((v_ArrVal_2100 Int)) (or (not (<= v_ArrVal_2100 |c_ULTIMATE.start_dll_create_~head~0#1.offset|)) (forall ((v_ArrVal_2111 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_81| Int) (v_ArrVal_2104 Int) (v_ArrVal_2105 Int)) (let ((.cse0 (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store .cse7 4 v_ArrVal_2100) 8 v_ArrVal_2104)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse4 0))))) (or (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_80| Int) (v_ArrVal_2113 Int) (v_ArrVal_2114 Int)) (or (forall ((v_ArrVal_2118 (Array Int Int)) (v_ArrVal_2116 Int)) (= (select (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse5 8 v_ArrVal_2105)))) (store .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse4 v_ArrVal_2111))))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) (select (store (store .cse0 .cse1 (store (select .cse0 .cse1) |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| v_ArrVal_2113)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2118) (select (store (select (store .cse2 .cse1 (store (select .cse2 .cse1) |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| v_ArrVal_2114)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_80| v_ArrVal_2116) 4)))) 4) 0)) (< 0 |v_ULTIMATE.start_dll_update_at_~head#1.offset_80|))) (not (<= |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4)))))))) (forall ((v_ArrVal_2100 Int)) (or (forall ((v_ArrVal_2111 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_81| Int) (v_ArrVal_2104 Int) (v_ArrVal_2105 Int)) (or (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_80| Int) (v_ArrVal_2114 Int)) (or (forall ((v_ArrVal_2116 Int)) (= (select (let ((.cse8 (let ((.cse10 (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse5 8 v_ArrVal_2105)))) (store .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse4 v_ArrVal_2111))))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) (store .cse10 .cse11 (store (select .cse10 .cse11) |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| v_ArrVal_2114)))))) (let ((.cse9 (store (select .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_80| v_ArrVal_2116))) (select (store .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse9) (select .cse9 4)))) 4) 0)) (< 0 |v_ULTIMATE.start_dll_update_at_~head#1.offset_80|))) (not (<= |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| (select (select (let ((.cse13 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store .cse7 4 v_ArrVal_2100) 8 v_ArrVal_2104)))) (store .cse13 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse13 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse4 0))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))))) (not (<= v_ArrVal_2100 |c_ULTIMATE.start_dll_create_~head~0#1.offset|)))))) is different from false [2022-11-03 04:03:54,555 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:54,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 310 treesize of output 286 [2022-11-03 04:03:54,579 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:54,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 249 treesize of output 190 [2022-11-03 04:03:54,645 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:54,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 406 treesize of output 275 [2022-11-03 04:03:54,672 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:54,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 37 [2022-11-03 04:03:54,734 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (and (forall ((v_ArrVal_2111 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_80| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_81| Int) (v_arrayElimArr_17 (Array Int Int)) (v_arrayElimArr_16 (Array Int Int)) (v_ArrVal_2114 Int) (v_ArrVal_2116 Int)) (or (= (select (let ((.cse0 (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_16))) (store .cse4 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 v_ArrVal_2111))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) (store .cse2 .cse3 (store (select .cse2 .cse3) |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| v_ArrVal_2114)))))) (let ((.cse1 (store (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_80| v_ArrVal_2116))) (select (store .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse1) (select .cse1 4)))) 4) 0) (not (= (select v_arrayElimArr_16 4) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (<= (select v_arrayElimArr_17 4) |c_ULTIMATE.start_dll_create_~head~0#1.offset|)) (< 0 |v_ULTIMATE.start_dll_update_at_~head#1.offset_80|) (not (<= |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_17))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 0))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))))) (forall ((v_ArrVal_2118 (Array Int Int)) (v_arrayElimArr_15 (Array Int Int)) (v_ArrVal_2111 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_80| Int) (v_arrayElimArr_14 (Array Int Int)) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_81| Int) (v_ArrVal_2113 Int) (v_ArrVal_2114 Int) (v_ArrVal_2116 Int)) (let ((.cse7 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_14))) (store .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 0))))) (or (not (<= (select v_arrayElimArr_14 4) |c_ULTIMATE.start_dll_create_~head~0#1.offset|)) (not (<= |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| (select (select .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) (not (= (select v_arrayElimArr_15 4) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (< 0 |v_ULTIMATE.start_dll_update_at_~head#1.offset_80|) (= (select (let ((.cse9 (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_15))) (store .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 v_ArrVal_2111))))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) (select (store (store .cse7 .cse8 (store (select .cse7 .cse8) |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| v_ArrVal_2113)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2118) (select (store (select (store .cse9 .cse8 (store (select .cse9 .cse8) |v_ULTIMATE.start_dll_update_at_~head#1.offset_81| v_ArrVal_2114)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_80| v_ArrVal_2116) 4)))) 4) 0)))))) is different from false [2022-11-03 04:03:59,579 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:59,580 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 417 treesize of output 258 [2022-11-03 04:03:59,609 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:59,610 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 292 treesize of output 222 [2022-11-03 04:03:59,736 INFO L356 Elim1Store]: treesize reduction 10, result has 76.7 percent of original size [2022-11-03 04:03:59,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 16142 treesize of output 15631 [2022-11-03 04:03:59,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:03,909 INFO L356 Elim1Store]: treesize reduction 1284, result has 19.5 percent of original size [2022-11-03 04:04:03,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 21866886 treesize of output 21153625 [2022-11-03 04:04:41,858 WARN L234 SmtUtils]: Spent 37.93s on a formula simplification that was a NOOP. DAG size: 9472 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 04:05:19,158 WARN L234 SmtUtils]: Spent 37.26s on a formula simplification that was a NOOP. DAG size: 9463 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 04:05:20,265 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 21153242 treesize of output 20598554 [2022-11-03 04:05:57,588 WARN L234 SmtUtils]: Spent 37.31s on a formula simplification that was a NOOP. DAG size: 9462 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 04:05:58,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:05:58,669 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 31440954 treesize of output 29517786