./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P --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 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:29:06,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:29:06,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:29:06,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:29:07,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:29:07,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:29:07,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:29:07,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:29:07,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:29:07,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:29:07,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:29:07,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:29:07,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:29:07,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:29:07,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:29:07,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:29:07,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:29:07,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:29:07,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:29:07,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:29:07,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:29:07,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:29:07,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:29:07,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:29:07,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:29:07,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:29:07,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:29:07,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:29:07,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:29:07,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:29:07,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:29:07,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:29:07,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:29:07,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:29:07,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:29:07,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:29:07,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:29:07,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:29:07,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:29:07,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:29:07,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:29:07,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 00:29:07,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:29:07,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:29:07,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:29:07,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:29:07,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:29:07,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:29:07,137 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:29:07,137 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:29:07,138 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:29:07,138 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:29:07,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:29:07,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:29:07,139 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:29:07,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:29:07,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:29:07,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:29:07,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:29:07,143 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:29:07,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:29:07,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:29:07,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:29:07,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:29:07,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:29:07,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:29:07,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:29:07,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:29:07,148 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:29:07,149 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:29:07,150 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:29:07,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:29:07,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:29:07,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:29:07,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:29:07,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:29:07,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:29:07,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:29:07,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:29:07,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:29:07,154 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:29:07,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:29:07,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:29:07,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:29:07,155 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 [2021-11-21 00:29:07,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:29:07,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:29:07,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:29:07,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:29:07,505 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:29:07,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2021-11-21 00:29:07,618 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/data/bab9b24ed/b9d45b44149b4bfeba2c85c55cdf6134/FLAG8c2aab211 [2021-11-21 00:29:08,284 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:29:08,285 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2021-11-21 00:29:08,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/data/bab9b24ed/b9d45b44149b4bfeba2c85c55cdf6134/FLAG8c2aab211 [2021-11-21 00:29:08,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/data/bab9b24ed/b9d45b44149b4bfeba2c85c55cdf6134 [2021-11-21 00:29:08,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:29:08,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:29:08,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:29:08,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:29:08,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:29:08,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:29:08" (1/1) ... [2021-11-21 00:29:08,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749c81cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:08, skipping insertion in model container [2021-11-21 00:29:08,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:29:08" (1/1) ... [2021-11-21 00:29:08,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:29:08,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:29:09,044 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_218286fe-1d43-4347-a880-accc8b03cb3d/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2021-11-21 00:29:09,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:29:09,067 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:29:09,130 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_218286fe-1d43-4347-a880-accc8b03cb3d/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2021-11-21 00:29:09,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:29:09,168 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:29:09,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09 WrapperNode [2021-11-21 00:29:09,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:29:09,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:29:09,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:29:09,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:29:09,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,244 INFO L137 Inliner]: procedures = 126, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2021-11-21 00:29:09,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:29:09,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:29:09,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:29:09,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:29:09,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:29:09,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:29:09,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:29:09,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:29:09,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (1/1) ... [2021-11-21 00:29:09,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:29:09,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:29:09,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:29:09,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:29:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-21 00:29:09,378 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-21 00:29:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:29:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:29:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:29:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:29:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:29:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:29:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:29:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:29:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:29:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:29:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:29:09,530 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:29:09,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:29:09,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-21 00:29:09,928 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:29:09,957 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:29:09,957 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 00:29:09,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:09 BoogieIcfgContainer [2021-11-21 00:29:09,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:29:09,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:29:09,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:29:09,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:29:09,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:29:08" (1/3) ... [2021-11-21 00:29:09,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e9965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:09, skipping insertion in model container [2021-11-21 00:29:09,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:09" (2/3) ... [2021-11-21 00:29:09,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e9965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:09, skipping insertion in model container [2021-11-21 00:29:09,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:09" (3/3) ... [2021-11-21 00:29:09,969 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all_reverse.i [2021-11-21 00:29:09,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:29:09,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-11-21 00:29:10,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:29:10,029 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:29:10,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-11-21 00:29:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 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) [2021-11-21 00:29:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:29:10,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:10,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:29:10,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash 5050762, now seen corresponding path program 1 times [2021-11-21 00:29:10,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:10,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851196999] [2021-11-21 00:29:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:10,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:10,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:10,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851196999] [2021-11-21 00:29:10,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851196999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:10,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:10,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:29:10,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982423808] [2021-11-21 00:29:10,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:10,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:10,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:10,319 INFO L87 Difference]: Start difference. First operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 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) [2021-11-21 00:29:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:10,456 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2021-11-21 00:29:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:10,458 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 [2021-11-21 00:29:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:10,467 INFO L225 Difference]: With dead ends: 109 [2021-11-21 00:29:10,467 INFO L226 Difference]: Without dead ends: 105 [2021-11-21 00:29:10,469 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:29:10,473 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 56 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:10,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 102 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:29:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-21 00:29:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2021-11-21 00:29:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 31 states have (on average 2.129032258064516) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-11-21 00:29:10,510 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 4 [2021-11-21 00:29:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:10,510 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-11-21 00:29:10,510 INFO L471 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) [2021-11-21 00:29:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-11-21 00:29:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:29:10,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:10,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:29:10,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:29:10,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:10,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash 5050763, now seen corresponding path program 1 times [2021-11-21 00:29:10,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:10,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417008731] [2021-11-21 00:29:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:10,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:10,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:10,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417008731] [2021-11-21 00:29:10,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417008731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:10,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:10,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:29:10,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292943040] [2021-11-21 00:29:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:10,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:10,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:10,572 INFO L87 Difference]: Start difference. First operand 62 states and 66 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) [2021-11-21 00:29:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:10,658 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-11-21 00:29:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:10,658 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 [2021-11-21 00:29:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:10,660 INFO L225 Difference]: With dead ends: 108 [2021-11-21 00:29:10,660 INFO L226 Difference]: Without dead ends: 108 [2021-11-21 00:29:10,661 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:29:10,663 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 60 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:10,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 110 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:29:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-21 00:29:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 59. [2021-11-21 00:29:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 31 states have (on average 2.032258064516129) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-11-21 00:29:10,672 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 4 [2021-11-21 00:29:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:10,672 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-11-21 00:29:10,672 INFO L471 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) [2021-11-21 00:29:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-11-21 00:29:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:29:10,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:10,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:29:10,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:29:10,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:10,675 INFO L85 PathProgramCache]: Analyzing trace with hash 5174857, now seen corresponding path program 1 times [2021-11-21 00:29:10,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:10,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899216786] [2021-11-21 00:29:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:10,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:10,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:10,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899216786] [2021-11-21 00:29:10,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899216786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:10,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:10,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:29:10,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417180581] [2021-11-21 00:29:10,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:10,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:10,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:10,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:10,721 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2021-11-21 00:29:10,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:10,760 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-11-21 00:29:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:10,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 [2021-11-21 00:29:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:10,762 INFO L225 Difference]: With dead ends: 69 [2021-11-21 00:29:10,762 INFO L226 Difference]: Without dead ends: 69 [2021-11-21 00:29:10,762 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:29:10,764 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:10,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:29:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-21 00:29:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2021-11-21 00:29:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 2.0) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-11-21 00:29:10,771 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 4 [2021-11-21 00:29:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:10,771 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-11-21 00:29:10,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2021-11-21 00:29:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-11-21 00:29:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:29:10,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:10,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:10,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:29:10,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash 150200334, now seen corresponding path program 1 times [2021-11-21 00:29:10,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:10,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890323975] [2021-11-21 00:29:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:10,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:10,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:10,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890323975] [2021-11-21 00:29:10,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890323975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:10,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:10,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:29:10,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515820771] [2021-11-21 00:29:10,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:10,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:10,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:10,831 INFO L87 Difference]: Start difference. First operand 60 states and 64 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) [2021-11-21 00:29:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:10,855 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-11-21 00:29:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:10,856 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 [2021-11-21 00:29:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:10,857 INFO L225 Difference]: With dead ends: 66 [2021-11-21 00:29:10,857 INFO L226 Difference]: Without dead ends: 66 [2021-11-21 00:29:10,857 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:29:10,859 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:10,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:29:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-21 00:29:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-11-21 00:29:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.864864864864865) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-11-21 00:29:10,865 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2021-11-21 00:29:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:10,866 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-11-21 00:29:10,866 INFO L471 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) [2021-11-21 00:29:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-11-21 00:29:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:29:10,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:10,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:10,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:29:10,867 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash -732865500, now seen corresponding path program 1 times [2021-11-21 00:29:10,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:10,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090120543] [2021-11-21 00:29:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:10,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:10,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:10,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090120543] [2021-11-21 00:29:10,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090120543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:29:10,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412906647] [2021-11-21 00:29:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:10,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:29:10,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:29:10,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:29:10,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:29:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:11,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:29:11,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:29:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:11,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:29:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:11,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412906647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:29:11,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [965789619] [2021-11-21 00:29:11,283 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 00:29:11,284 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:29:11,291 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:29:11,299 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:29:11,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:29:11,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,427 INFO L388 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 [2021-11-21 00:29:11,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:29:11,870 INFO L388 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 [2021-11-21 00:29:11,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:11,917 INFO L388 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 [2021-11-21 00:29:12,006 INFO L388 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 [2021-11-21 00:29:12,133 INFO L388 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 [2021-11-21 00:29:12,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:12,174 INFO L388 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 [2021-11-21 00:29:12,229 INFO L388 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 [2021-11-21 00:29:12,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:12,326 INFO L388 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 [2021-11-21 00:29:12,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:12,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:12,412 INFO L388 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 [2021-11-21 00:29:12,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:12,468 INFO L388 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 [2021-11-21 00:29:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:29:13,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,388 INFO L388 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 [2021-11-21 00:29:13,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,464 INFO L388 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 [2021-11-21 00:29:13,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,521 INFO L388 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 [2021-11-21 00:29:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,682 INFO L388 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 [2021-11-21 00:29:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,721 INFO L388 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 [2021-11-21 00:29:13,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:13,767 INFO L388 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 [2021-11-21 00:29:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:14,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:14,090 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:14,091 INFO L388 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 407 treesize of output 406 [2021-11-21 00:29:14,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:14,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:14,133 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:29:14,136 INFO L388 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 403 treesize of output 384 [2021-11-21 00:29:14,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:14,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:14,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:14,180 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:14,181 INFO L388 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 384 treesize of output 383 [2021-11-21 00:29:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2021-11-21 00:29:15,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,755 INFO L388 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 [2021-11-21 00:29:15,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,790 INFO L388 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 [2021-11-21 00:29:15,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,818 INFO L388 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 [2021-11-21 00:29:15,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:15,990 INFO L388 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 [2021-11-21 00:29:16,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,040 INFO L388 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 [2021-11-21 00:29:16,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,213 INFO L388 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 [2021-11-21 00:29:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:16,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:16,359 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:16,361 INFO L388 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 407 treesize of output 406 [2021-11-21 00:29:16,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:16,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:16,407 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:29:16,408 INFO L388 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 403 treesize of output 384 [2021-11-21 00:29:16,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:16,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:16,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:16,458 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:16,460 INFO L388 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 384 treesize of output 383 [2021-11-21 00:29:17,646 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-21 00:29:17,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 452 treesize of output 459 [2021-11-21 00:29:20,280 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 00:29:20,281 INFO L388 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 377 treesize of output 368 [2021-11-21 00:29:20,318 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 00:29:20,319 INFO L388 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 362 treesize of output 353 [2021-11-21 00:29:20,359 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-21 00:29:20,359 INFO L388 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 347 treesize of output 344 [2021-11-21 00:29:20,812 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:29:22,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [965789619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:22,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:29:22,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2021-11-21 00:29:22,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934327372] [2021-11-21 00:29:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:22,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:29:22,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:29:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:29:22,841 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:23,562 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-11-21 00:29:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:29:23,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 00:29:23,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:23,563 INFO L225 Difference]: With dead ends: 76 [2021-11-21 00:29:23,563 INFO L226 Difference]: Without dead ends: 76 [2021-11-21 00:29:23,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:29:23,565 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:23,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 94 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:29:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-21 00:29:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2021-11-21 00:29:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.75) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-11-21 00:29:23,573 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 11 [2021-11-21 00:29:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:23,573 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-11-21 00:29:23,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-11-21 00:29:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 00:29:23,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:23,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 00:29:23,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:29:23,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:29:23,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1488330647, now seen corresponding path program 1 times [2021-11-21 00:29:23,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580461630] [2021-11-21 00:29:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:23,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:23,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580461630] [2021-11-21 00:29:23,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580461630] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:29:23,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424481917] [2021-11-21 00:29:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:23,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:29:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:29:23,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:29:23,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:29:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:23,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:29:23,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:29:24,002 INFO L388 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 [2021-11-21 00:29:24,035 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:29:24,035 INFO L388 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 [2021-11-21 00:29:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:24,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:29:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:24,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424481917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:29:24,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521491052] [2021-11-21 00:29:24,261 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-21 00:29:24,261 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:29:24,261 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:29:24,262 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:29:24,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:29:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,308 INFO L388 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 [2021-11-21 00:29:24,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:29:24,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,635 INFO L388 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 [2021-11-21 00:29:24,658 INFO L388 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 [2021-11-21 00:29:24,763 INFO L388 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 [2021-11-21 00:29:24,836 INFO L388 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 [2021-11-21 00:29:24,884 INFO L388 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 [2021-11-21 00:29:24,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:24,931 INFO L388 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 [2021-11-21 00:29:25,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,004 INFO L388 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 [2021-11-21 00:29:25,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,028 INFO L388 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 [2021-11-21 00:29:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,058 INFO L388 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 [2021-11-21 00:29:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:29:25,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,733 INFO L388 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 [2021-11-21 00:29:25,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,753 INFO L388 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 [2021-11-21 00:29:25,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,812 INFO L388 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 [2021-11-21 00:29:25,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:25,961 INFO L388 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 [2021-11-21 00:29:26,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,034 INFO L388 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 [2021-11-21 00:29:26,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,070 INFO L388 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 [2021-11-21 00:29:26,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:26,174 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:29:26,174 INFO L388 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 399 treesize of output 380 [2021-11-21 00:29:26,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:26,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:26,199 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 00:29:26,199 INFO L388 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 380 treesize of output 379 [2021-11-21 00:29:26,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:26,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:26,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:26,246 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 00:29:26,247 INFO L388 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 376 treesize of output 375 [2021-11-21 00:29:27,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2021-11-21 00:29:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,571 INFO L388 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 [2021-11-21 00:29:27,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,695 INFO L388 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 [2021-11-21 00:29:27,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,782 INFO L388 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 [2021-11-21 00:29:27,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,877 INFO L388 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 [2021-11-21 00:29:27,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,941 INFO L388 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 [2021-11-21 00:29:27,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:27,996 INFO L388 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 [2021-11-21 00:29:28,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:28,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:28,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:28,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:28,101 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 00:29:28,102 INFO L388 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 399 treesize of output 398 [2021-11-21 00:29:28,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:28,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:28,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:28,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:28,134 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 00:29:28,134 INFO L388 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 395 treesize of output 394 [2021-11-21 00:29:28,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:28,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:28,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:28,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:28,162 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:29:28,162 INFO L388 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 391 treesize of output 372 [2021-11-21 00:29:29,704 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-21 00:29:29,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 452 treesize of output 459 [2021-11-21 00:29:32,259 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 00:29:32,259 INFO L388 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 381 treesize of output 372 [2021-11-21 00:29:32,297 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-21 00:29:32,298 INFO L388 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 366 treesize of output 363 [2021-11-21 00:29:32,331 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 00:29:32,332 INFO L388 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 362 treesize of output 353 [2021-11-21 00:29:32,759 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:29:34,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [521491052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:34,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:29:34,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 14 [2021-11-21 00:29:34,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222049620] [2021-11-21 00:29:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:34,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:29:34,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:34,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:29:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:29:34,784 INFO L87 Difference]: Start difference. First operand 72 states and 77 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) [2021-11-21 00:29:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:35,630 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2021-11-21 00:29:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:29:35,631 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 [2021-11-21 00:29:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:35,631 INFO L225 Difference]: With dead ends: 74 [2021-11-21 00:29:35,631 INFO L226 Difference]: Without dead ends: 74 [2021-11-21 00:29:35,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:29:35,633 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:35,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 116 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:29:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-21 00:29:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-11-21 00:29:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 72 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-11-21 00:29:35,639 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 15 [2021-11-21 00:29:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:35,639 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-11-21 00:29:35,640 INFO L471 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) [2021-11-21 00:29:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-11-21 00:29:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:29:35,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:35,641 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:35,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:29:35,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:29:35,849 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:35,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash 891856784, now seen corresponding path program 1 times [2021-11-21 00:29:35,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749510012] [2021-11-21 00:29:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:35,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:29:36,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:36,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749510012] [2021-11-21 00:29:36,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749510012] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:29:36,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049476923] [2021-11-21 00:29:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:36,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:29:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:29:36,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:29:36,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:29:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:36,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:29:36,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:29:36,089 INFO L388 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 [2021-11-21 00:29:36,121 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:29:36,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 19 [2021-11-21 00:29:36,225 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 00:29:36,226 INFO L388 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 3 case distinctions, treesize of input 22 treesize of output 27 [2021-11-21 00:29:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-21 00:29:36,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:29:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-21 00:29:46,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049476923] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:29:46,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:29:46,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2021-11-21 00:29:46,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132912123] [2021-11-21 00:29:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:46,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:29:46,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:29:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=69, Unknown=5, NotChecked=0, Total=110 [2021-11-21 00:29:46,499 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:46,596 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2021-11-21 00:29:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:29:46,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 00:29:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:46,598 INFO L225 Difference]: With dead ends: 114 [2021-11-21 00:29:46,598 INFO L226 Difference]: Without dead ends: 114 [2021-11-21 00:29:46,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=44, Invalid=83, Unknown=5, NotChecked=0, Total=132 [2021-11-21 00:29:46,599 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 158 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:46,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 55 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2021-11-21 00:29:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-21 00:29:46,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2021-11-21 00:29:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 73 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-11-21 00:29:46,607 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 19 [2021-11-21 00:29:46,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:46,607 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-11-21 00:29:46,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-11-21 00:29:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:29:46,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:46,608 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:46,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:29:46,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 00:29:46,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:29:46,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash 891856785, now seen corresponding path program 1 times [2021-11-21 00:29:46,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:46,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868481989] [2021-11-21 00:29:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:46,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:47,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:47,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868481989] [2021-11-21 00:29:47,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868481989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:29:47,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893097383] [2021-11-21 00:29:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:47,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:29:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:29:47,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:29:47,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:29:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:47,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:29:47,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:29:47,091 INFO L388 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 [2021-11-21 00:29:47,119 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:29:47,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 17 [2021-11-21 00:29:47,309 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 00:29:47,310 INFO L388 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 3 case distinctions, treesize of input 27 treesize of output 32 [2021-11-21 00:29:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:47,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:29:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:29:51,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893097383] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:29:51,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1233189360] [2021-11-21 00:29:51,929 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:29:51,929 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:29:51,929 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:29:51,930 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:29:51,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:29:51,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:51,970 INFO L388 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 [2021-11-21 00:29:52,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:29:52,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,363 INFO L388 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 [2021-11-21 00:29:52,424 INFO L388 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 [2021-11-21 00:29:52,446 INFO L388 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 [2021-11-21 00:29:52,523 INFO L388 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 [2021-11-21 00:29:52,560 INFO L388 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 [2021-11-21 00:29:52,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,606 INFO L388 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 [2021-11-21 00:29:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,741 INFO L388 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 [2021-11-21 00:29:52,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,799 INFO L388 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 [2021-11-21 00:29:52,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:52,828 INFO L388 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 [2021-11-21 00:29:53,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:29:53,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,625 INFO L388 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 [2021-11-21 00:29:53,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,667 INFO L388 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 [2021-11-21 00:29:53,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,761 INFO L388 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 [2021-11-21 00:29:53,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,876 INFO L388 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 [2021-11-21 00:29:53,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:53,940 INFO L388 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 [2021-11-21 00:29:54,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,015 INFO L388 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 [2021-11-21 00:29:54,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:54,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:54,247 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:54,247 INFO L388 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 404 treesize of output 403 [2021-11-21 00:29:54,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:54,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:54,291 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:54,291 INFO L388 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 400 treesize of output 399 [2021-11-21 00:29:54,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:54,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:54,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:54,336 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:29:54,337 INFO L388 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 396 treesize of output 377 [2021-11-21 00:29:55,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,171 INFO L388 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 [2021-11-21 00:29:55,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,277 INFO L388 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 [2021-11-21 00:29:55,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:55,398 INFO L388 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 [2021-11-21 00:29:56,515 INFO L354 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2021-11-21 00:29:56,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 576 treesize of output 570 [2021-11-21 00:29:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,275 INFO L388 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 [2021-11-21 00:29:57,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,335 INFO L388 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 [2021-11-21 00:29:57,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,427 INFO L388 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 [2021-11-21 00:29:57,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,548 INFO L388 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 [2021-11-21 00:29:57,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,639 INFO L388 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 [2021-11-21 00:29:57,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,676 INFO L388 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 [2021-11-21 00:29:57,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:57,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:57,834 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:29:57,834 INFO L388 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 404 treesize of output 385 [2021-11-21 00:29:57,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:57,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:57,860 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:57,860 INFO L388 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 385 treesize of output 384 [2021-11-21 00:29:57,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:57,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:57,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:29:57,893 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 00:29:57,894 INFO L388 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 381 treesize of output 380 [2021-11-21 00:29:58,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,724 INFO L388 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 [2021-11-21 00:29:58,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,797 INFO L388 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 [2021-11-21 00:29:58,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:29:58,843 INFO L388 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 [2021-11-21 00:30:00,096 INFO L388 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 [2021-11-21 00:30:00,112 INFO L388 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 [2021-11-21 00:30:00,327 INFO L388 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 [2021-11-21 00:30:00,344 INFO L388 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 [2021-11-21 00:30:00,392 INFO L388 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 [2021-11-21 00:30:00,403 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:30:02,938 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:30:02,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:30:02,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 12 [2021-11-21 00:30:02,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008490382] [2021-11-21 00:30:02,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:30:02,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:30:02,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:30:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=418, Unknown=1, NotChecked=0, Total=552 [2021-11-21 00:30:02,940 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 14 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:09,133 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2021-11-21 00:30:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:30:09,134 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 00:30:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:09,136 INFO L225 Difference]: With dead ends: 91 [2021-11-21 00:30:09,136 INFO L226 Difference]: Without dead ends: 91 [2021-11-21 00:30:09,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=194, Invalid=560, Unknown=2, NotChecked=0, Total=756 [2021-11-21 00:30:09,137 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:09,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 245 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2021-11-21 00:30:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-21 00:30:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-11-21 00:30:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.6666666666666667) internal successors, (100), 85 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) [2021-11-21 00:30:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2021-11-21 00:30:09,155 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 19 [2021-11-21 00:30:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:09,155 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2021-11-21 00:30:09,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2021-11-21 00:30:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:30:09,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:09,156 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:09,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:09,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 00:30:09,376 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:09,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash 891859513, now seen corresponding path program 1 times [2021-11-21 00:30:09,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:09,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036388972] [2021-11-21 00:30:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:09,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:30:09,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:09,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036388972] [2021-11-21 00:30:09,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036388972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:09,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:09,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:30:09,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300265883] [2021-11-21 00:30:09,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:09,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:09,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:09,417 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:09,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:09,438 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-11-21 00:30:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:30:09,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 00:30:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:09,440 INFO L225 Difference]: With dead ends: 120 [2021-11-21 00:30:09,440 INFO L226 Difference]: Without dead ends: 120 [2021-11-21 00:30:09,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:09,441 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 126 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:09,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 109 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:30:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-21 00:30:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 85. [2021-11-21 00:30:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.6271186440677967) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2021-11-21 00:30:09,449 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2021-11-21 00:30:09,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:09,449 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2021-11-21 00:30:09,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2021-11-21 00:30:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:30:09,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:09,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:09,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:30:09,451 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756558, now seen corresponding path program 1 times [2021-11-21 00:30:09,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518770322] [2021-11-21 00:30:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:09,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:30:09,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:09,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518770322] [2021-11-21 00:30:09,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518770322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:09,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:09,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:30:09,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114283490] [2021-11-21 00:30:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:09,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:30:09,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:09,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:30:09,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:09,522 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2021-11-21 00:30:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:09,749 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2021-11-21 00:30:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:30:09,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 [2021-11-21 00:30:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:09,750 INFO L225 Difference]: With dead ends: 115 [2021-11-21 00:30:09,750 INFO L226 Difference]: Without dead ends: 115 [2021-11-21 00:30:09,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:30:09,751 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 129 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:09,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 140 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:30:09,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-21 00:30:09,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 85. [2021-11-21 00:30:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.6) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2021-11-21 00:30:09,756 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 20 [2021-11-21 00:30:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:09,756 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2021-11-21 00:30:09,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2021-11-21 00:30:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2021-11-21 00:30:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:30:09,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:09,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:09,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:30:09,757 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756559, now seen corresponding path program 1 times [2021-11-21 00:30:09,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:09,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073980777] [2021-11-21 00:30:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:09,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:09,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073980777] [2021-11-21 00:30:09,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073980777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:09,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:09,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:30:09,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885230140] [2021-11-21 00:30:09,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:09,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:30:09,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:09,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:30:09,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:09,852 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2021-11-21 00:30:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:10,066 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-11-21 00:30:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:30:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 [2021-11-21 00:30:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:10,067 INFO L225 Difference]: With dead ends: 110 [2021-11-21 00:30:10,067 INFO L226 Difference]: Without dead ends: 110 [2021-11-21 00:30:10,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:30:10,069 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 217 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:10,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 104 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:30:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-21 00:30:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2021-11-21 00:30:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.55) internal successors, (93), 83 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-11-21 00:30:10,073 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 20 [2021-11-21 00:30:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:10,073 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-11-21 00:30:10,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2021-11-21 00:30:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-11-21 00:30:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:30:10,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:10,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:10,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:30:10,075 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash 637789040, now seen corresponding path program 1 times [2021-11-21 00:30:10,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:10,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829853664] [2021-11-21 00:30:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:10,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:30:10,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:10,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829853664] [2021-11-21 00:30:10,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829853664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:10,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:10,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:30:10,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53679463] [2021-11-21 00:30:10,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:10,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:10,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:10,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:10,127 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-21 00:30:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:10,192 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2021-11-21 00:30:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:30:10,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2021-11-21 00:30:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:10,193 INFO L225 Difference]: With dead ends: 81 [2021-11-21 00:30:10,193 INFO L226 Difference]: Without dead ends: 81 [2021-11-21 00:30:10,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:10,194 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 126 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:10,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 45 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:30:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-21 00:30:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-21 00:30:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.5) internal successors, (90), 80 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) [2021-11-21 00:30:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2021-11-21 00:30:10,199 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 22 [2021-11-21 00:30:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:10,199 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2021-11-21 00:30:10,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-21 00:30:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2021-11-21 00:30:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 00:30:10,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:10,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:10,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:30:10,201 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:10,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1703376233, now seen corresponding path program 1 times [2021-11-21 00:30:10,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:10,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743079083] [2021-11-21 00:30:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:10,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:10,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:10,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743079083] [2021-11-21 00:30:10,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743079083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:10,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:10,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:30:10,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203459037] [2021-11-21 00:30:10,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:10,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:30:10,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:30:10,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:10,263 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:10,377 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-11-21 00:30:10,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:30:10,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 00:30:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:10,380 INFO L225 Difference]: With dead ends: 80 [2021-11-21 00:30:10,381 INFO L226 Difference]: Without dead ends: 80 [2021-11-21 00:30:10,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:30:10,382 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 174 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:10,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 55 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:30:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-21 00:30:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-21 00:30:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 79 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) [2021-11-21 00:30:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-11-21 00:30:10,386 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 23 [2021-11-21 00:30:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-11-21 00:30:10,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-11-21 00:30:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 00:30:10,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:10,387 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:10,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:30:10,388 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:10,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360589, now seen corresponding path program 1 times [2021-11-21 00:30:10,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:10,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363428558] [2021-11-21 00:30:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:10,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:30:10,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363428558] [2021-11-21 00:30:10,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363428558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:10,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:10,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:30:10,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421604282] [2021-11-21 00:30:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:10,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:10,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:10,431 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:10,528 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-11-21 00:30:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:30:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 00:30:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:10,529 INFO L225 Difference]: With dead ends: 80 [2021-11-21 00:30:10,529 INFO L226 Difference]: Without dead ends: 80 [2021-11-21 00:30:10,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:10,530 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:10,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 71 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:30:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-21 00:30:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-11-21 00:30:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.459016393442623) internal successors, (89), 78 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) [2021-11-21 00:30:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2021-11-21 00:30:10,534 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 23 [2021-11-21 00:30:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:10,534 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2021-11-21 00:30:10,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2021-11-21 00:30:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 00:30:10,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:10,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:10,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:30:10,536 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360588, now seen corresponding path program 1 times [2021-11-21 00:30:10,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:10,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983589149] [2021-11-21 00:30:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:10,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:10,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983589149] [2021-11-21 00:30:10,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983589149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:10,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:10,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:30:10,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172427190] [2021-11-21 00:30:10,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:10,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:30:10,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:30:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:30:10,656 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:10,932 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-11-21 00:30:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:30:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 00:30:10,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:10,933 INFO L225 Difference]: With dead ends: 120 [2021-11-21 00:30:10,933 INFO L226 Difference]: Without dead ends: 120 [2021-11-21 00:30:10,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:30:10,934 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 229 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:10,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 110 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:30:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-21 00:30:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 86. [2021-11-21 00:30:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 85 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) [2021-11-21 00:30:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2021-11-21 00:30:10,938 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 23 [2021-11-21 00:30:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:10,939 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2021-11-21 00:30:10,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2021-11-21 00:30:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 00:30:10,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:10,940 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:10,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:30:10,940 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1265055569, now seen corresponding path program 1 times [2021-11-21 00:30:10,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:10,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075787768] [2021-11-21 00:30:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:10,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:11,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:11,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075787768] [2021-11-21 00:30:11,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075787768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:11,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:11,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:30:11,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798143149] [2021-11-21 00:30:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:11,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:30:11,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:11,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:30:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:11,005 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:11,197 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-11-21 00:30:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:30:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-21 00:30:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:11,199 INFO L225 Difference]: With dead ends: 103 [2021-11-21 00:30:11,199 INFO L226 Difference]: Without dead ends: 103 [2021-11-21 00:30:11,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:30:11,200 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 174 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:11,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 90 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:30:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-21 00:30:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2021-11-21 00:30:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 88 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2021-11-21 00:30:11,204 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 24 [2021-11-21 00:30:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:11,204 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2021-11-21 00:30:11,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2021-11-21 00:30:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 00:30:11,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:11,205 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:11,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:30:11,206 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:11,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash -562016871, now seen corresponding path program 1 times [2021-11-21 00:30:11,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:11,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492541493] [2021-11-21 00:30:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:11,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:30:11,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:11,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492541493] [2021-11-21 00:30:11,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492541493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:11,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:11,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:30:11,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447072556] [2021-11-21 00:30:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:11,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:11,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:11,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:11,255 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:11,347 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-11-21 00:30:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:30:11,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-21 00:30:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:11,349 INFO L225 Difference]: With dead ends: 88 [2021-11-21 00:30:11,349 INFO L226 Difference]: Without dead ends: 88 [2021-11-21 00:30:11,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:11,350 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 19 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:11,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 87 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:30:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-21 00:30:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-21 00:30:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 87 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-11-21 00:30:11,353 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 25 [2021-11-21 00:30:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:11,353 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-11-21 00:30:11,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-11-21 00:30:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 00:30:11,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:11,354 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:11,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:30:11,354 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash -546984227, now seen corresponding path program 1 times [2021-11-21 00:30:11,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:11,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046345848] [2021-11-21 00:30:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:11,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:11,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:11,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046345848] [2021-11-21 00:30:11,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046345848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:11,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:11,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:30:11,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016180526] [2021-11-21 00:30:11,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:11,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:30:11,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:30:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:30:11,529 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:11,896 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2021-11-21 00:30:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:30:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-21 00:30:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:11,898 INFO L225 Difference]: With dead ends: 90 [2021-11-21 00:30:11,898 INFO L226 Difference]: Without dead ends: 90 [2021-11-21 00:30:11,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:30:11,899 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 171 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:11,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 106 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:30:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-21 00:30:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2021-11-21 00:30:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.4) internal successors, (98), 86 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2021-11-21 00:30:11,902 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 25 [2021-11-21 00:30:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:11,903 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2021-11-21 00:30:11,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2021-11-21 00:30:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:30:11,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:11,903 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:11,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:30:11,904 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -242653710, now seen corresponding path program 1 times [2021-11-21 00:30:11,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:11,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206713837] [2021-11-21 00:30:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:11,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:12,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:12,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206713837] [2021-11-21 00:30:12,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206713837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:12,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776348926] [2021-11-21 00:30:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:12,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:12,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:12,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:12,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:30:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:12,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:30:12,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:12,255 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:30:12,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 19 [2021-11-21 00:30:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:30:12,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:30:12,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776348926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:12,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:30:12,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-11-21 00:30:12,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457380297] [2021-11-21 00:30:12,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:12,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:30:12,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:30:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:30:12,290 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) 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) [2021-11-21 00:30:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:12,460 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2021-11-21 00:30:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:30:12,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) 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 26 [2021-11-21 00:30:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:12,462 INFO L225 Difference]: With dead ends: 127 [2021-11-21 00:30:12,462 INFO L226 Difference]: Without dead ends: 127 [2021-11-21 00:30:12,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:30:12,463 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 90 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:12,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 142 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2021-11-21 00:30:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-21 00:30:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 107. [2021-11-21 00:30:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 90 states have (on average 1.488888888888889) internal successors, (134), 106 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 134 transitions. [2021-11-21 00:30:12,468 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 134 transitions. Word has length 26 [2021-11-21 00:30:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:12,468 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 134 transitions. [2021-11-21 00:30:12,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) 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) [2021-11-21 00:30:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 134 transitions. [2021-11-21 00:30:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:30:12,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:12,469 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:12,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:12,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:12,681 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash 223361305, now seen corresponding path program 1 times [2021-11-21 00:30:12,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:12,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269934689] [2021-11-21 00:30:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:12,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:12,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:12,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269934689] [2021-11-21 00:30:12,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269934689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:12,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349634689] [2021-11-21 00:30:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:12,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:12,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:12,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:12,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:30:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-21 00:30:12,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:12,983 INFO L388 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 [2021-11-21 00:30:13,073 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:30:13,073 INFO L388 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 [2021-11-21 00:30:13,123 INFO L388 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 [2021-11-21 00:30:13,128 INFO L388 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 [2021-11-21 00:30:13,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:13,178 INFO L388 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 [2021-11-21 00:30:13,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:13,186 INFO L388 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 [2021-11-21 00:30:13,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:30:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:13,299 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-21 00:30:13,299 INFO L388 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 95 treesize of output 70 [2021-11-21 00:30:13,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:30:13,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:13,315 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-21 00:30:13,315 INFO L388 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 2 case distinctions, treesize of input 85 treesize of output 81 [2021-11-21 00:30:13,881 INFO L354 Elim1Store]: treesize reduction 90, result has 3.2 percent of original size [2021-11-21 00:30:13,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 127 treesize of output 88 [2021-11-21 00:30:14,050 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:30:14,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 29 [2021-11-21 00:30:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:14,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:14,572 INFO L354 Elim1Store]: treesize reduction 5, result has 90.4 percent of original size [2021-11-21 00:30:14,572 INFO L388 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 187 treesize of output 186 [2021-11-21 00:30:16,469 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse0 (select (select .cse3 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ .cse0 4))) (let ((.cse2 (select (select .cse5 .cse1) .cse4))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse2) (and (= 0 (select (select .cse3 .cse1) .cse4)) (= .cse2 0))))))))) is different from false [2021-11-21 00:30:18,589 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse8 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse1 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse4 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (let ((.cse6 (store |c_#memory_$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|) .cse8 0)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (let ((.cse3 (select (select .cse5 .cse0) .cse2))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (and (= (select (select .cse1 .cse0) .cse2) 0) (= .cse3 0)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3)))))))) is different from false [2021-11-21 00:30:18,671 INFO L354 Elim1Store]: treesize reduction 1629, result has 0.1 percent of original size [2021-11-21 00:30:18,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 70561 treesize of output 1 [2021-11-21 00:30:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:30:18,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349634689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:30:18,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [686814894] [2021-11-21 00:30:18,692 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-21 00:30:18,692 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:30:18,693 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:30:18,693 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:30:18,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:30:18,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:18,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:18,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:30:18,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:18,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:18,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:18,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:18,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:18,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:30:19,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:19,139 INFO L388 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 [2021-11-21 00:30:19,161 INFO L388 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 [2021-11-21 00:30:19,180 INFO L388 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 [2021-11-21 00:30:19,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:19,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:19,297 INFO L388 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 [2021-11-21 00:30:19,347 INFO L388 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 [2021-11-21 00:30:19,387 INFO L388 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 [2021-11-21 00:30:19,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:19,501 INFO L388 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 [2021-11-21 00:30:19,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:19,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:19,540 INFO L388 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 [2021-11-21 00:30:19,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:19,602 INFO L388 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 [2021-11-21 00:30:20,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:30:20,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,434 INFO L388 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 [2021-11-21 00:30:20,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,528 INFO L388 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 [2021-11-21 00:30:20,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,591 INFO L388 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 [2021-11-21 00:30:20,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,718 INFO L388 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 [2021-11-21 00:30:20,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,795 INFO L388 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 [2021-11-21 00:30:20,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,846 INFO L388 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 [2021-11-21 00:30:20,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:20,981 INFO L388 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 [2021-11-21 00:30:21,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,038 INFO L388 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 [2021-11-21 00:30:21,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,088 INFO L388 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 [2021-11-21 00:30:21,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:30:21,479 INFO L388 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 [2021-11-21 00:30:21,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:30:21,545 INFO L388 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 [2021-11-21 00:30:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:21,637 INFO L388 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 [2021-11-21 00:30:22,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:22,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:22,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:22,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:22,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:22,579 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 00:30:22,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2021-11-21 00:30:23,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,013 INFO L388 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 [2021-11-21 00:30:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,073 INFO L388 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 [2021-11-21 00:30:23,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,180 INFO L388 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 43 treesize of output 28 [2021-11-21 00:30:23,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,291 INFO L388 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 41 treesize of output 37 [2021-11-21 00:30:23,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,334 INFO L388 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 [2021-11-21 00:30:23,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,576 INFO L388 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 [2021-11-21 00:30:23,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,696 INFO L388 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 [2021-11-21 00:30:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,770 INFO L388 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 50 treesize of output 49 [2021-11-21 00:30:23,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:23,849 INFO L388 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 [2021-11-21 00:30:24,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,288 INFO L388 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 [2021-11-21 00:30:24,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,364 INFO L388 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 59 treesize of output 52 [2021-11-21 00:30:24,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:24,469 INFO L388 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 [2021-11-21 00:30:28,351 INFO L388 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 [2021-11-21 00:30:28,379 INFO L388 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 [2021-11-21 00:30:28,565 INFO L388 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 [2021-11-21 00:30:28,588 INFO L388 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 [2021-11-21 00:30:28,613 INFO L388 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 [2021-11-21 00:30:28,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:28,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:28,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:28,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:30:28,690 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:30:28,690 INFO L388 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 238 treesize of output 224 [2021-11-21 00:30:28,871 INFO L388 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 [2021-11-21 00:30:28,881 INFO L388 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 [2021-11-21 00:30:29,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:29,056 INFO L388 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 [2021-11-21 00:30:29,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:29,133 INFO L388 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 [2021-11-21 00:30:29,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:29,150 INFO L388 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 [2021-11-21 00:30:29,296 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:30:32,380 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:30:32,381 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:30:32,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 35 [2021-11-21 00:30:32,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799957594] [2021-11-21 00:30:32,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:30:32,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-21 00:30:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-21 00:30:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2220, Unknown=2, NotChecked=194, Total=2652 [2021-11-21 00:30:32,384 INFO L87 Difference]: Start difference. First operand 107 states and 134 transitions. Second operand has 36 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:34,449 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse8 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse1 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse4 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (let ((.cse6 (store |c_#memory_$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|) .cse8 0)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (let ((.cse3 (select (select .cse5 .cse0) .cse2))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (and (= (select (select .cse1 .cse0) .cse2) 0) (= .cse3 0)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3)))))))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0)) is different from false [2021-11-21 00:30:35,933 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse0 (select (select .cse3 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ .cse0 4))) (let ((.cse2 (select (select .cse5 .cse1) .cse4))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse2) (and (= 0 (select (select .cse3 .cse1) .cse4)) (= .cse2 0)))))))))) is different from false [2021-11-21 00:30:38,011 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse11 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse11))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse8 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse1 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse4 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (let ((.cse3 (select (select .cse5 .cse0) .cse2))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (and (= (select (select .cse1 .cse0) .cse2) 0) (= .cse3 0)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3)))))))) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse10) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select |c_#valid| .cse10) 1) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse11) |c_ULTIMATE.start_dll_create_~head~0#1.offset|)))) is different from false [2021-11-21 00:30:40,004 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 .cse1)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select .cse2 .cse3) 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (= (select .cse0 .cse3) 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse10 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse4 (select (select .cse7 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse5 (select (select .cse9 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (+ .cse4 4))) (let ((.cse6 (select (select .cse9 .cse5) .cse8))) (or (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse6) (and (= 0 (select (select .cse7 .cse5) .cse8)) (= .cse6 0))))))))) (= (select .cse2 .cse1) |c_ULTIMATE.start_dll_create_~head~0#1.offset|))) is different from false [2021-11-21 00:30:41,848 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 .cse1)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select .cse2 .cse3) 0) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (= (select .cse0 .cse3) 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse10 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse4 (select (select .cse7 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse5 (select (select .cse9 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (+ .cse4 4))) (let ((.cse6 (select (select .cse9 .cse5) .cse8))) (or (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse6) (and (= 0 (select (select .cse7 .cse5) .cse8)) (= .cse6 0))))))))) (= (select .cse2 .cse1) |c_ULTIMATE.start_dll_create_~head~0#1.offset|))) is different from false [2021-11-21 00:30:43,828 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse8 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse1 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse4 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (let ((.cse3 (select (select .cse5 .cse0) .cse2))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (and (= (select (select .cse1 .cse0) .cse2) 0) (= .cse3 0)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3)))))))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 4)) 1) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0)) is different from false [2021-11-21 00:30:46,046 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse8 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse1 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse4 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (let ((.cse6 (store |c_#memory_$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|) .cse8 0)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (let ((.cse3 (select (select .cse5 .cse0) .cse2))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (and (= (select (select .cse1 .cse0) .cse2) 0) (= .cse3 0)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3)))))))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1)) is different from false [2021-11-21 00:30:47,661 WARN L838 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse0 (select (select .cse3 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ .cse0 4))) (let ((.cse2 (select (select .cse5 .cse1) .cse4))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse2) (and (= 0 (select (select .cse3 .cse1) .cse4)) (= .cse2 0)))))))))) is different from false [2021-11-21 00:30:50,078 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse10 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse11 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse8 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse1 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse4 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (let ((.cse6 (store |c_#memory_$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|) .cse8 0)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ .cse4 4))) (let ((.cse3 (select (select .cse5 .cse0) .cse2))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (and (= (select (select .cse1 .cse0) .cse2) 0) (= .cse3 0)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3)))))))) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store .cse10 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0) .cse11)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select |c_#valid| (select .cse10 .cse11)) 1))) is different from false [2021-11-21 00:30:51,595 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse0 (select (select .cse3 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ .cse0 4))) (let ((.cse2 (select (select .cse5 .cse1) .cse4))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse2) (and (= 0 (select (select .cse3 .cse1) .cse4)) (= .cse2 0)))))))))) is different from false [2021-11-21 00:30:53,224 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse0 (select (select .cse3 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ .cse0 4))) (let ((.cse2 (select (select .cse5 .cse1) .cse4))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse2) (and (= 0 (select (select .cse3 .cse1) .cse4)) (= .cse2 0)))))))))) is different from false [2021-11-21 00:30:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:53,519 INFO L93 Difference]: Finished difference Result 311 states and 375 transitions. [2021-11-21 00:30:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-21 00:30:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2021-11-21 00:30:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:53,521 INFO L225 Difference]: With dead ends: 311 [2021-11-21 00:30:53,521 INFO L226 Difference]: Without dead ends: 311 [2021-11-21 00:30:53,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=487, Invalid=4664, Unknown=13, NotChecked=1976, Total=7140 [2021-11-21 00:30:53,525 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 385 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 754 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:53,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 547 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1000 Invalid, 0 Unknown, 754 Unchecked, 0.7s Time] [2021-11-21 00:30:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-21 00:30:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 122. [2021-11-21 00:30:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 105 states have (on average 1.4666666666666666) internal successors, (154), 121 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 154 transitions. [2021-11-21 00:30:53,532 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 154 transitions. Word has length 26 [2021-11-21 00:30:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:53,532 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 154 transitions. [2021-11-21 00:30:53,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 154 transitions. [2021-11-21 00:30:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:30:53,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:53,534 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:53,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:53,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:53,751 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:30:53,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash 223361306, now seen corresponding path program 1 times [2021-11-21 00:30:53,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:53,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549206226] [2021-11-21 00:30:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:53,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:54,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549206226] [2021-11-21 00:30:54,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549206226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011251206] [2021-11-21 00:30:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:54,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:54,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:54,102 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:54,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:30:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:54,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-21 00:30:54,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:54,183 INFO L388 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 [2021-11-21 00:30:54,273 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:30:54,273 INFO L388 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 [2021-11-21 00:30:54,322 INFO L388 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 [2021-11-21 00:30:54,329 INFO L388 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 [2021-11-21 00:30:54,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:54,371 INFO L388 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 [2021-11-21 00:30:54,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:54,378 INFO L388 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 [2021-11-21 00:30:54,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:54,470 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-21 00:30:54,471 INFO L388 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 3 case distinctions, treesize of input 119 treesize of output 94 [2021-11-21 00:30:54,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:54,487 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-21 00:30:54,487 INFO L388 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 3 case distinctions, treesize of input 109 treesize of output 90 [2021-11-21 00:30:55,184 INFO L354 Elim1Store]: treesize reduction 65, result has 11.0 percent of original size [2021-11-21 00:30:55,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 140 treesize of output 73 [2021-11-21 00:30:55,199 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-21 00:30:55,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 37 [2021-11-21 00:30:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:55,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:55,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:30:55,873 INFO L388 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 284 treesize of output 288 [2021-11-21 00:30:57,641 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse2 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse3 (select (select .cse4 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse2 4))) (let ((.cse0 (select (select .cse6 .cse3) .cse5)) (.cse1 (select (select .cse4 .cse3) .cse5))) (or (and (<= .cse0 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse1) (<= 0 (+ 4 .cse0))) (not (= .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (and (= 0 .cse0) (= .cse1 0))))))))) is different from false [2021-11-21 00:30:59,931 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse8 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse9 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse6 (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse9 0)))) (store .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse3 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (let ((.cse7 (store |c_#memory_$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|) .cse9 0)))) (store .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse4 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse3 4))) (let ((.cse1 (select (select .cse6 .cse0) .cse5)) (.cse2 (select (select .cse4 .cse0) .cse5))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (and (= .cse1 0) (= .cse2 0)) (not (= .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (and (<= 0 (+ .cse1 4)) (<= .cse1 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse2))))))))) is different from false [2021-11-21 00:31:00,440 INFO L354 Elim1Store]: treesize reduction 1343, result has 17.6 percent of original size [2021-11-21 00:31:00,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 74199 treesize of output 68717 [2021-11-21 00:31:05,444 INFO L354 Elim1Store]: treesize reduction 1283, result has 24.1 percent of original size [2021-11-21 00:31:05,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 80 case distinctions, treesize of input 671190 treesize of output 636610 [2021-11-21 00:31:56,965 WARN L227 SmtUtils]: Spent 51.51s on a formula simplification. DAG size of input: 2577 DAG size of output: 2491 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:32,340 WARN L227 SmtUtils]: Spent 35.35s on a formula simplification. DAG size of input: 2033 DAG size of output: 1986 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:32,845 INFO L354 Elim1Store]: treesize reduction 8, result has 90.1 percent of original size [2021-11-21 00:32:32,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 406143 treesize of output 405995 [2021-11-21 00:32:36,343 INFO L354 Elim1Store]: treesize reduction 8, result has 90.1 percent of original size [2021-11-21 00:32:36,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 405995 treesize of output 405839 [2021-11-21 00:32:53,587 WARN L227 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 1676 DAG size of output: 1676 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:52,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:52,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:52,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:52,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:52,575 INFO L354 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2021-11-21 00:33:52,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 27 [2021-11-21 00:33:52,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:52,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:52,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:52,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 00:33:54,484 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:33:55,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:55,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:55,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:33:55,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:33:55,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2021-11-21 00:34:03,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:03,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:03,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:03,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:03,524 INFO L354 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2021-11-21 00:34:03,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 27 [2021-11-21 00:34:03,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:03,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:03,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:03,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 00:34:06,497 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:07,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:07,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:07,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:07,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:07,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:07,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2021-11-21 00:34:15,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:15,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:15,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:15,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:15,926 INFO L354 Elim1Store]: treesize reduction 11, result has 47.6 percent of original size [2021-11-21 00:34:15,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2021-11-21 00:34:16,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,323 INFO L354 Elim1Store]: treesize reduction 22, result has 56.9 percent of original size [2021-11-21 00:34:16,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 49 [2021-11-21 00:34:16,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:16,743 INFO L354 Elim1Store]: treesize reduction 11, result has 47.6 percent of original size [2021-11-21 00:34:16,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2021-11-21 00:34:19,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,564 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:34:19,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2021-11-21 00:34:19,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:19,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 00:34:22,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:34:22,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2021-11-21 00:34:22,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:22,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 00:34:25,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:25,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:25,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:25,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:25,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:25,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:25,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:25,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:34:25,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 65 [2021-11-21 00:34:26,719 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:27,119 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:28,021 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:29,646 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:35,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:35,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 00:34:35,581 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:35,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 00:34:35,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:35,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:35,998 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:34:35,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 27 [2021-11-21 00:34:36,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:36,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 00:34:36,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:34:36,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 00:34:36,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:36,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 00:34:36,999 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:59,810 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:34:59,903 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:00,525 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:00,670 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:01,592 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:01,730 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:03,481 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:17,926 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:18,513 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:18,690 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:26,607 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:35:27,229 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:36:51,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:51,821 INFO L388 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 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:36:51,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:51,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:51,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:51,854 INFO L388 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2021-11-21 00:36:51,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:51,885 INFO L388 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 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:36:51,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:36:51,952 INFO L388 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 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:36:52,109 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:37:07,235 INFO L388 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 17 treesize of output 11 [2021-11-21 00:37:08,410 INFO L388 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 12 treesize of output 8 [2021-11-21 00:37:08,476 INFO L388 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 12 treesize of output 8 [2021-11-21 00:37:08,552 INFO L388 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 12 treesize of output 8 [2021-11-21 00:37:08,643 INFO L388 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 12 treesize of output 8 [2021-11-21 00:37:10,720 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:37:11,025 INFO L388 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 12 treesize of output 8 [2021-11-21 00:37:11,112 INFO L388 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 12 treesize of output 8 [2021-11-21 00:37:11,675 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 00:37:12,158 INFO L388 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 12 treesize of output 8 [2021-11-21 00:37:13,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:13,885 INFO L354 Elim1Store]: treesize reduction 18, result has 87.1 percent of original size [2021-11-21 00:37:13,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 1100 treesize of output 1150 [2021-11-21 00:37:27,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:27,878 INFO L388 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 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:37:27,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:27,908 INFO L388 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 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:37:28,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:28,100 INFO L388 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 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:37:28,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:28,164 INFO L388 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 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:37:28,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:28,935 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:37:28,935 INFO L388 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 334 treesize of output 296 [2021-11-21 00:37:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-21 00:37:31,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011251206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:37:31,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1540663347] [2021-11-21 00:37:31,567 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-21 00:37:31,567 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:37:31,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:37:31,568 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:37:31,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:37:31,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:31,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:31,596 INFO L388 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 [2021-11-21 00:37:31,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:31,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:31,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:31,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:31,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:31,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:37:32,012 INFO L388 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 [2021-11-21 00:37:32,033 INFO L388 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 [2021-11-21 00:37:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:32,067 INFO L388 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 [2021-11-21 00:37:32,169 INFO L388 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 [2021-11-21 00:37:32,234 INFO L388 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 [2021-11-21 00:37:32,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:32,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:32,283 INFO L388 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 [2021-11-21 00:37:32,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:32,456 INFO L388 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 [2021-11-21 00:37:32,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:32,502 INFO L388 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 [2021-11-21 00:37:32,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:32,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:32,545 INFO L388 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 [2021-11-21 00:37:33,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:37:33,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,403 INFO L388 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 [2021-11-21 00:37:33,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,521 INFO L388 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 [2021-11-21 00:37:33,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,542 INFO L388 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 [2021-11-21 00:37:33,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,602 INFO L388 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 [2021-11-21 00:37:33,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,656 INFO L388 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 [2021-11-21 00:37:33,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,703 INFO L388 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 [2021-11-21 00:37:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:33,861 INFO L388 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 [2021-11-21 00:37:34,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,011 INFO L388 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 [2021-11-21 00:37:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,057 INFO L388 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 [2021-11-21 00:37:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,410 INFO L388 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 [2021-11-21 00:37:34,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,477 INFO L388 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 [2021-11-21 00:37:34,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:34,617 INFO L388 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 [2021-11-21 00:37:35,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:35,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:35,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:35,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:35,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:35,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:35,929 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 00:37:35,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2021-11-21 00:37:36,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:36,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:36,736 INFO L388 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 [2021-11-21 00:37:36,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:36,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:36,843 INFO L388 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 [2021-11-21 00:37:36,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:36,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:36,909 INFO L388 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 43 treesize of output 28 [2021-11-21 00:37:37,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,028 INFO L388 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 [2021-11-21 00:37:37,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,120 INFO L388 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 [2021-11-21 00:37:37,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,231 INFO L388 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 41 treesize of output 37 [2021-11-21 00:37:37,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,724 INFO L388 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 [2021-11-21 00:37:37,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,839 INFO L388 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 50 treesize of output 49 [2021-11-21 00:37:37,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:37,918 INFO L388 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 [2021-11-21 00:37:38,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,788 INFO L388 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 59 treesize of output 52 [2021-11-21 00:37:38,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,909 INFO L388 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 [2021-11-21 00:37:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:38,986 INFO L388 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 [2021-11-21 00:37:44,050 INFO L388 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 [2021-11-21 00:37:44,068 INFO L388 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 [2021-11-21 00:37:44,242 INFO L388 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 [2021-11-21 00:37:44,267 INFO L388 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 [2021-11-21 00:37:44,306 INFO L388 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 [2021-11-21 00:37:44,411 INFO L388 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 [2021-11-21 00:37:44,423 INFO L388 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 [2021-11-21 00:37:44,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:44,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:44,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:37:44,461 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:37:44,461 INFO L388 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 238 treesize of output 224 [2021-11-21 00:37:44,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:44,814 INFO L388 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 [2021-11-21 00:37:44,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:44,855 INFO L388 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 [2021-11-21 00:37:44,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:44,887 INFO L388 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 [2021-11-21 00:37:45,145 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:37:48,569 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:37:48,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:37:48,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 42 [2021-11-21 00:37:48,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958421206] [2021-11-21 00:37:48,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:37:48,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-21 00:37:48,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-21 00:37:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=2885, Unknown=2, NotChecked=222, Total=3422 [2021-11-21 00:37:48,572 INFO L87 Difference]: Start difference. First operand 122 states and 154 transitions. Second operand has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 43 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:37:50,850 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 .cse1)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store .cse0 .cse2 0) .cse1)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (store .cse3 .cse2 0) .cse1) 0) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 12) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse12 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse13 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse10 (let ((.cse14 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse13 0)))) (store .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse7 (select (select .cse10 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (let ((.cse11 (store |c_#memory_$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|) .cse13 0)))) (store .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse12 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse4 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse9 (+ .cse7 4))) (let ((.cse5 (select (select .cse10 .cse4) .cse9)) (.cse6 (select (select .cse8 .cse4) .cse9))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse4)) (and (= .cse5 0) (= .cse6 0)) (not (= .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (and (<= 0 (+ .cse5 4)) (<= .cse5 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse6))))))))) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select .cse3 .cse1) |c_ULTIMATE.start_dll_create_~head~0#1.offset|))) is different from false [2021-11-21 00:37:52,854 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 .cse1)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store .cse0 .cse2 0) .cse1)) (= (select .cse3 .cse2) 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (store .cse3 .cse2 0) .cse1) 0) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse11 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse6 (select (select .cse10 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse7 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse9 (+ .cse6 4))) (let ((.cse4 (select (select .cse10 .cse7) .cse9)) (.cse5 (select (select .cse8 .cse7) .cse9))) (or (and (<= .cse4 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse5) (<= 0 (+ 4 .cse4))) (not (= .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (and (= 0 .cse4) (= .cse5 0))))))))) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (= (select .cse0 .cse2) 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select .cse3 .cse1) |c_ULTIMATE.start_dll_create_~head~0#1.offset|))) is different from false [2021-11-21 00:37:54,835 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 .cse1)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store .cse0 .cse2 0) .cse1)) (= (select .cse3 .cse2) 0) (= (select (store .cse3 .cse2 0) .cse1) 0) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse11 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse6 (select (select .cse10 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse7 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse9 (+ .cse6 4))) (let ((.cse4 (select (select .cse10 .cse7) .cse9)) (.cse5 (select (select .cse8 .cse7) .cse9))) (or (and (<= .cse4 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse5) (<= 0 (+ 4 .cse4))) (not (= .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (and (= 0 .cse4) (= .cse5 0))))))))) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (= (select .cse0 .cse2) 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select .cse3 .cse1) |c_ULTIMATE.start_dll_create_~head~0#1.offset|))) is different from false [2021-11-21 00:37:57,816 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4))) (let ((.cse0 (<= 0 .cse1))) (and (or .cse0 (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (or .cse0 (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse10 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse11 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse8 (let ((.cse12 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse11 0)))) (store .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse5 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (let ((.cse9 (store |c_#memory_$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|) .cse11 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse2 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ .cse5 4))) (let ((.cse3 (select (select .cse8 .cse2) .cse7)) (.cse4 (select (select .cse6 .cse2) .cse7))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2)) (and (= .cse3 0) (= .cse4 0)) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (and (<= 0 (+ .cse3 4)) (<= .cse3 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse4))))))))) (or .cse0 (<= 0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0)))) is different from false [2021-11-21 00:37:59,231 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse2 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse3 (select (select .cse4 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse2 4))) (let ((.cse0 (select (select .cse6 .cse3) .cse5)) (.cse1 (select (select .cse4 .cse3) .cse5))) (or (and (<= .cse0 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse1) (<= 0 (+ 4 .cse0))) (not (= .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (and (= 0 .cse0) (= .cse1 0))))))))) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0)) is different from false [2021-11-21 00:38:02,811 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0 0) .cse1)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0 0) .cse1) 0) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 12) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse10 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse11 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse8 (let ((.cse12 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse11 0)))) (store .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse5 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (let ((.cse9 (store |c_#memory_$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|) .cse11 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse2 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ .cse5 4))) (let ((.cse3 (select (select .cse8 .cse2) .cse7)) (.cse4 (select (select .cse6 .cse2) .cse7))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2)) (and (= .cse3 0) (= .cse4 0)) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (and (<= 0 (+ .cse3 4)) (<= .cse3 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse4))))))))) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0))) is different from false [2021-11-21 00:38:04,770 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0 0) .cse1)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0 0) .cse1) 0) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse9 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse4 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse5 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ .cse4 4))) (let ((.cse2 (select (select .cse8 .cse5) .cse7)) (.cse3 (select (select .cse6 .cse5) .cse7))) (or (and (<= .cse2 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3) (<= 0 (+ 4 .cse2))) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (and (= 0 .cse2) (= .cse3 0))))))))) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12))) is different from false [2021-11-21 00:38:06,749 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0 0) .cse1)) (= (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0 0) .cse1) 0) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse9 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse4 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse5 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ .cse4 4))) (let ((.cse2 (select (select .cse8 .cse5) .cse7)) (.cse3 (select (select .cse6 .cse5) .cse7))) (or (and (<= .cse2 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse3) (<= 0 (+ 4 .cse2))) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (and (= 0 .cse2) (= .cse3 0))))))))))) is different from false [2021-11-21 00:38:09,216 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4))) (let ((.cse0 (<= 0 .cse1))) (and (or .cse0 (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (or .cse0 (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse10 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse11 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse8 (let ((.cse12 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse11 0)))) (store .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse5 (select (select .cse8 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (let ((.cse9 (store |c_#memory_$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|) .cse11 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse2 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ .cse5 4))) (let ((.cse3 (select (select .cse8 .cse2) .cse7)) (.cse4 (select (select .cse6 .cse2) .cse7))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2)) (and (= .cse3 0) (= .cse4 0)) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (and (<= 0 (+ .cse3 4)) (<= .cse3 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse4))))))))) (or .cse0 (<= 0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (or .cse0 (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_42| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_42|) 0))))))) is different from false [2021-11-21 00:38:10,668 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse2 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse3 (select (select .cse4 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse2 4))) (let ((.cse0 (select (select .cse6 .cse3) .cse5)) (.cse1 (select (select .cse4 .cse3) .cse5))) (or (and (<= .cse0 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse1) (<= 0 (+ 4 .cse0))) (not (= .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (and (= 0 .cse0) (= .cse1 0))))))))) (= (select |c_#length| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 12)) is different from false [2021-11-21 00:38:11,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:11,016 INFO L93 Difference]: Finished difference Result 459 states and 547 transitions. [2021-11-21 00:38:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-21 00:38:11,016 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 43 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-21 00:38:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:11,018 INFO L225 Difference]: With dead ends: 459 [2021-11-21 00:38:11,018 INFO L226 Difference]: Without dead ends: 459 [2021-11-21 00:38:11,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 2459 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=832, Invalid=7760, Unknown=12, NotChecked=2316, Total=10920 [2021-11-21 00:38:11,023 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 705 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1313 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:11,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 843 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1388 Invalid, 0 Unknown, 1313 Unchecked, 1.0s Time] [2021-11-21 00:38:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-21 00:38:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 166. [2021-11-21 00:38:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 150 states have (on average 1.4) internal successors, (210), 165 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:38:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 210 transitions. [2021-11-21 00:38:11,030 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 210 transitions. Word has length 26 [2021-11-21 00:38:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:11,031 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 210 transitions. [2021-11-21 00:38:11,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 43 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:38:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 210 transitions. [2021-11-21 00:38:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 00:38:11,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:11,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:38:11,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:38:11,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:11,237 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:38:11,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash -98148669, now seen corresponding path program 1 times [2021-11-21 00:38:11,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:11,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742216413] [2021-11-21 00:38:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:11,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:38:11,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742216413] [2021-11-21 00:38:11,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742216413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:38:11,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523145906] [2021-11-21 00:38:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:11,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:38:11,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:38:11,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:38:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:11,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:38:11,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:38:11,429 INFO L388 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 17 treesize of output 9 [2021-11-21 00:38:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:38:11,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:38:11,474 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-21 00:38:11,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2021-11-21 00:38:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:38:11,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523145906] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:38:11,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [400418066] [2021-11-21 00:38:11,501 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-21 00:38:11,501 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:38:11,501 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:38:11,501 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:38:11,501 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:38:11,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,539 INFO L388 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 [2021-11-21 00:38:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:38:11,884 INFO L388 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 [2021-11-21 00:38:11,910 INFO L388 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 [2021-11-21 00:38:11,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:11,938 INFO L388 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 [2021-11-21 00:38:11,978 INFO L388 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 [2021-11-21 00:38:12,018 INFO L388 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 [2021-11-21 00:38:12,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,064 INFO L388 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 [2021-11-21 00:38:12,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,109 INFO L388 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 [2021-11-21 00:38:12,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,154 INFO L388 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 [2021-11-21 00:38:12,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,214 INFO L388 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 [2021-11-21 00:38:12,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:38:12,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,922 INFO L388 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 [2021-11-21 00:38:12,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:12,987 INFO L388 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 [2021-11-21 00:38:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,012 INFO L388 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 [2021-11-21 00:38:13,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,152 INFO L388 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 [2021-11-21 00:38:13,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,200 INFO L388 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 [2021-11-21 00:38:13,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,337 INFO L388 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 [2021-11-21 00:38:13,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,407 INFO L388 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 [2021-11-21 00:38:13,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,491 INFO L388 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 [2021-11-21 00:38:13,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,543 INFO L388 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 [2021-11-21 00:38:13,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:13,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:13,985 INFO L388 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 [2021-11-21 00:38:14,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:14,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:14,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:14,074 INFO L388 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 [2021-11-21 00:38:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:14,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:14,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:14,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:14,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:14,212 INFO L388 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 [2021-11-21 00:38:15,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:15,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:38:16,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,097 INFO L388 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 [2021-11-21 00:38:16,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,192 INFO L388 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 [2021-11-21 00:38:16,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,359 INFO L388 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 43 treesize of output 28 [2021-11-21 00:38:16,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,587 INFO L388 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 [2021-11-21 00:38:16,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,624 INFO L388 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 [2021-11-21 00:38:16,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,653 INFO L388 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 41 treesize of output 37 [2021-11-21 00:38:16,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,819 INFO L388 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 [2021-11-21 00:38:16,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,876 INFO L388 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 [2021-11-21 00:38:16,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:16,924 INFO L388 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 50 treesize of output 49 [2021-11-21 00:38:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,325 INFO L388 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 [2021-11-21 00:38:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,400 INFO L388 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 [2021-11-21 00:38:17,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,443 INFO L388 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 59 treesize of output 52 [2021-11-21 00:38:22,187 INFO L388 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 [2021-11-21 00:38:22,246 INFO L388 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 [2021-11-21 00:38:22,485 INFO L388 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 [2021-11-21 00:38:22,530 INFO L388 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 [2021-11-21 00:38:22,582 INFO L388 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 [2021-11-21 00:38:22,709 INFO L388 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 [2021-11-21 00:38:22,736 INFO L388 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 [2021-11-21 00:38:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:22,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:22,977 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:38:22,977 INFO L388 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 238 treesize of output 224 [2021-11-21 00:38:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:23,135 INFO L388 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 [2021-11-21 00:38:23,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:23,207 INFO L388 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 [2021-11-21 00:38:23,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:23,250 INFO L388 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 [2021-11-21 00:38:23,643 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:38:25,947 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:38:25,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:38:25,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-11-21 00:38:25,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184982693] [2021-11-21 00:38:25,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:38:25,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:38:25,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:38:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:38:25,948 INFO L87 Difference]: Start difference. First operand 166 states and 210 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) [2021-11-21 00:38:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:26,080 INFO L93 Difference]: Finished difference Result 166 states and 207 transitions. [2021-11-21 00:38:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:38:26,080 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 28 [2021-11-21 00:38:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:26,081 INFO L225 Difference]: With dead ends: 166 [2021-11-21 00:38:26,082 INFO L226 Difference]: Without dead ends: 166 [2021-11-21 00:38:26,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:38:26,083 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:26,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 83 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:38:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-21 00:38:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2021-11-21 00:38:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 150 states have (on average 1.38) internal successors, (207), 164 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:38:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 207 transitions. [2021-11-21 00:38:26,088 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 207 transitions. Word has length 28 [2021-11-21 00:38:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:26,089 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 207 transitions. [2021-11-21 00:38:26,089 INFO L471 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) [2021-11-21 00:38:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 207 transitions. [2021-11-21 00:38:26,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 00:38:26,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:26,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:38:26,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:38:26,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:26,305 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:38:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -98148668, now seen corresponding path program 1 times [2021-11-21 00:38:26,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:26,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383860155] [2021-11-21 00:38:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:26,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:38:26,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:26,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383860155] [2021-11-21 00:38:26,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383860155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:38:26,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444515277] [2021-11-21 00:38:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:26,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:26,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:38:26,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:38:26,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:38:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:38:26,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:38:26,608 INFO L388 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 30 treesize of output 22 [2021-11-21 00:38:26,610 INFO L388 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 19 treesize of output 11 [2021-11-21 00:38:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:38:26,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:38:26,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:38:26,746 INFO L388 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 23 treesize of output 27 [2021-11-21 00:38:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:38:26,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444515277] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:38:26,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1492394930] [2021-11-21 00:38:26,807 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-21 00:38:26,807 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:38:26,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:38:26,808 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:38:26,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:38:26,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:26,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:26,842 INFO L388 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 [2021-11-21 00:38:26,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:26,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:26,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:26,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:38:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:27,105 INFO L388 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 [2021-11-21 00:38:27,135 INFO L388 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 [2021-11-21 00:38:27,157 INFO L388 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 [2021-11-21 00:38:27,276 INFO L388 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 [2021-11-21 00:38:27,331 INFO L388 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 [2021-11-21 00:38:27,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:27,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:27,350 INFO L388 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 [2021-11-21 00:38:27,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:27,436 INFO L388 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 [2021-11-21 00:38:27,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:27,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:27,487 INFO L388 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 [2021-11-21 00:38:27,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:27,531 INFO L388 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 [2021-11-21 00:38:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:38:28,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,354 INFO L388 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 [2021-11-21 00:38:28,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,432 INFO L388 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 [2021-11-21 00:38:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,532 INFO L388 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 [2021-11-21 00:38:28,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,598 INFO L388 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 [2021-11-21 00:38:28,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,673 INFO L388 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 [2021-11-21 00:38:28,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,788 INFO L388 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 [2021-11-21 00:38:28,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,885 INFO L388 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 [2021-11-21 00:38:28,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:28,931 INFO L388 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 [2021-11-21 00:38:29,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,118 INFO L388 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 [2021-11-21 00:38:29,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,531 INFO L388 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 [2021-11-21 00:38:29,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:29,586 INFO L388 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 [2021-11-21 00:38:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:29,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:29,686 INFO L388 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 [2021-11-21 00:38:31,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:31,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:31,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:31,211 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 00:38:31,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2021-11-21 00:38:32,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,138 INFO L388 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 [2021-11-21 00:38:32,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,194 INFO L388 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 [2021-11-21 00:38:32,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,270 INFO L388 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 43 treesize of output 28 [2021-11-21 00:38:32,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,580 INFO L388 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 41 treesize of output 37 [2021-11-21 00:38:32,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,920 INFO L388 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 [2021-11-21 00:38:32,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:32,992 INFO L388 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 [2021-11-21 00:38:33,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,137 INFO L388 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 50 treesize of output 49 [2021-11-21 00:38:33,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,373 INFO L388 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 [2021-11-21 00:38:33,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:33,486 INFO L388 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 [2021-11-21 00:38:34,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,391 INFO L388 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 [2021-11-21 00:38:34,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,432 INFO L388 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 [2021-11-21 00:38:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:34,462 INFO L388 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 59 treesize of output 52 [2021-11-21 00:38:39,733 INFO L388 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 [2021-11-21 00:38:39,750 INFO L388 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 [2021-11-21 00:38:40,004 INFO L388 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 [2021-11-21 00:38:40,048 INFO L388 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 [2021-11-21 00:38:40,080 INFO L388 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 [2021-11-21 00:38:40,238 INFO L388 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 [2021-11-21 00:38:40,260 INFO L388 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 [2021-11-21 00:38:40,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:40,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:40,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:38:40,523 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:38:40,524 INFO L388 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 238 treesize of output 224 [2021-11-21 00:38:40,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:40,692 INFO L388 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 [2021-11-21 00:38:40,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:40,780 INFO L388 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 [2021-11-21 00:38:40,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:40,818 INFO L388 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 [2021-11-21 00:38:41,233 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:38:43,910 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:38:43,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:38:43,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 17 [2021-11-21 00:38:43,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279820482] [2021-11-21 00:38:43,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:38:43,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 00:38:43,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:43,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 00:38:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:38:43,911 INFO L87 Difference]: Start difference. First operand 165 states and 207 transitions. Second operand has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 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) [2021-11-21 00:38:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:44,662 INFO L93 Difference]: Finished difference Result 207 states and 247 transitions. [2021-11-21 00:38:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 00:38:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 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) Word has length 28 [2021-11-21 00:38:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:44,664 INFO L225 Difference]: With dead ends: 207 [2021-11-21 00:38:44,664 INFO L226 Difference]: Without dead ends: 207 [2021-11-21 00:38:44,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=396, Invalid=2360, Unknown=0, NotChecked=0, Total=2756 [2021-11-21 00:38:44,665 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 336 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:44,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 152 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:38:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-21 00:38:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 164. [2021-11-21 00:38:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 150 states have (on average 1.36) internal successors, (204), 163 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:38:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 204 transitions. [2021-11-21 00:38:44,671 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 204 transitions. Word has length 28 [2021-11-21 00:38:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:44,671 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 204 transitions. [2021-11-21 00:38:44,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 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) [2021-11-21 00:38:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 204 transitions. [2021-11-21 00:38:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 00:38:44,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:44,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:38:44,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:38:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:44,893 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:38:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash -466611782, now seen corresponding path program 1 times [2021-11-21 00:38:44,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:44,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727131393] [2021-11-21 00:38:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:44,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:38:44,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:44,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727131393] [2021-11-21 00:38:44,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727131393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:38:44,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6253193] [2021-11-21 00:38:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:44,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:38:44,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:38:44,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:38:44,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:38:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:45,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-21 00:38:45,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:38:45,034 INFO L388 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 [2021-11-21 00:38:45,059 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:38:45,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-21 00:38:45,140 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 00:38:45,140 INFO L388 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 3 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:38:45,262 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:38:45,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 19 [2021-11-21 00:38:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:38:45,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:38:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:38:45,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6253193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:38:45,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1290735702] [2021-11-21 00:38:45,673 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 00:38:45,673 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:38:45,673 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:38:45,674 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:38:45,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:38:45,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:45,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:45,710 INFO L388 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 [2021-11-21 00:38:45,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:45,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:45,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:45,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:45,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:45,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:38:45,966 INFO L388 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 [2021-11-21 00:38:46,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,021 INFO L388 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 [2021-11-21 00:38:46,066 INFO L388 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 [2021-11-21 00:38:46,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,099 INFO L388 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 [2021-11-21 00:38:46,152 INFO L388 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 [2021-11-21 00:38:46,171 INFO L388 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 [2021-11-21 00:38:46,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,244 INFO L388 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 [2021-11-21 00:38:46,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,275 INFO L388 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 [2021-11-21 00:38:46,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,318 INFO L388 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 [2021-11-21 00:38:46,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:46,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:38:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,151 INFO L388 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 [2021-11-21 00:38:47,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,201 INFO L388 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 [2021-11-21 00:38:47,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,244 INFO L388 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 [2021-11-21 00:38:47,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,439 INFO L388 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 [2021-11-21 00:38:47,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,487 INFO L388 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 [2021-11-21 00:38:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,549 INFO L388 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 [2021-11-21 00:38:47,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,699 INFO L388 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 [2021-11-21 00:38:47,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,767 INFO L388 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 [2021-11-21 00:38:47,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:47,936 INFO L388 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 [2021-11-21 00:38:48,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,356 INFO L388 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 [2021-11-21 00:38:48,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,395 INFO L388 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 [2021-11-21 00:38:48,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:48,552 INFO L388 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 [2021-11-21 00:38:49,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:49,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:49,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:49,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:49,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:49,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:49,914 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 00:38:49,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2021-11-21 00:38:50,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,508 INFO L388 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 [2021-11-21 00:38:50,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,690 INFO L388 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 [2021-11-21 00:38:50,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,848 INFO L388 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 43 treesize of output 28 [2021-11-21 00:38:50,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:50,978 INFO L388 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 41 treesize of output 37 [2021-11-21 00:38:51,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,100 INFO L388 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 [2021-11-21 00:38:51,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,312 INFO L388 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 [2021-11-21 00:38:51,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,488 INFO L388 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 [2021-11-21 00:38:51,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,542 INFO L388 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 [2021-11-21 00:38:51,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,574 INFO L388 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 50 treesize of output 49 [2021-11-21 00:38:51,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:51,997 INFO L388 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 59 treesize of output 52 [2021-11-21 00:38:52,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,058 INFO L388 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 [2021-11-21 00:38:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:52,138 INFO L388 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 [2021-11-21 00:38:54,662 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-11-21 00:38:54,662 INFO L388 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 25 treesize of output 29 [2021-11-21 00:38:54,930 INFO L354 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2021-11-21 00:38:54,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 87 [2021-11-21 00:38:54,960 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-21 00:38:54,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 60 [2021-11-21 00:38:55,106 INFO L388 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 [2021-11-21 00:38:58,042 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-11-21 00:38:58,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 45 [2021-11-21 00:38:58,342 INFO L388 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 [2021-11-21 00:38:58,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:58,457 INFO L354 Elim1Store]: treesize reduction 81, result has 13.8 percent of original size [2021-11-21 00:38:58,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 114 [2021-11-21 00:38:58,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:58,493 INFO L354 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2021-11-21 00:38:58,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 91 [2021-11-21 00:39:02,673 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-11-21 00:39:02,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 45 [2021-11-21 00:39:02,851 INFO L388 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 [2021-11-21 00:39:02,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:02,912 INFO L354 Elim1Store]: treesize reduction 81, result has 13.8 percent of original size [2021-11-21 00:39:02,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 114 [2021-11-21 00:39:02,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:02,933 INFO L354 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2021-11-21 00:39:02,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 91 [2021-11-21 00:39:08,179 INFO L354 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2021-11-21 00:39:08,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 388 treesize of output 403 [2021-11-21 00:39:10,648 INFO L388 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 [2021-11-21 00:39:10,697 INFO L388 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 [2021-11-21 00:39:10,991 INFO L388 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 [2021-11-21 00:39:11,019 INFO L388 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 [2021-11-21 00:39:11,089 INFO L388 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 [2021-11-21 00:39:11,213 INFO L388 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 [2021-11-21 00:39:11,240 INFO L388 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 [2021-11-21 00:39:11,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:11,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:11,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:11,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:11,289 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:39:11,290 INFO L388 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 238 treesize of output 224 [2021-11-21 00:39:11,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:11,744 INFO L388 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 [2021-11-21 00:39:11,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:11,792 INFO L388 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 [2021-11-21 00:39:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:11,815 INFO L388 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 [2021-11-21 00:39:11,944 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:39:16,628 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:39:16,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:39:16,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 15 [2021-11-21 00:39:16,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668088182] [2021-11-21 00:39:16,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:39:16,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 00:39:16,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 00:39:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 00:39:16,629 INFO L87 Difference]: Start difference. First operand 164 states and 204 transitions. Second operand has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:39:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:16,891 INFO L93 Difference]: Finished difference Result 192 states and 236 transitions. [2021-11-21 00:39:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:39:16,891 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 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 [2021-11-21 00:39:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:16,892 INFO L225 Difference]: With dead ends: 192 [2021-11-21 00:39:16,892 INFO L226 Difference]: Without dead ends: 192 [2021-11-21 00:39:16,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=234, Invalid=1172, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:39:16,893 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 232 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:16,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 120 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 248 Invalid, 0 Unknown, 166 Unchecked, 0.1s Time] [2021-11-21 00:39:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-21 00:39:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 167. [2021-11-21 00:39:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 153 states have (on average 1.3660130718954249) internal successors, (209), 166 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:39:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 209 transitions. [2021-11-21 00:39:16,898 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 209 transitions. Word has length 29 [2021-11-21 00:39:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:16,899 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 209 transitions. [2021-11-21 00:39:16,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:39:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 209 transitions. [2021-11-21 00:39:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 00:39:16,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:16,900 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:39:16,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:39:17,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:39:17,113 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:39:17,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash -466611781, now seen corresponding path program 1 times [2021-11-21 00:39:17,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:17,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93823354] [2021-11-21 00:39:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:17,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:39:17,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:17,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93823354] [2021-11-21 00:39:17,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93823354] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:39:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552367051] [2021-11-21 00:39:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:17,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:39:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:39:17,195 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:39:17,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:39:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:17,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-21 00:39:17,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:39:17,279 INFO L388 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 [2021-11-21 00:39:17,351 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:39:17,351 INFO L388 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 [2021-11-21 00:39:17,390 INFO L388 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 [2021-11-21 00:39:17,417 INFO L388 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 19 treesize of output 18 [2021-11-21 00:39:17,467 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-21 00:39:17,467 INFO L388 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 3 case distinctions, treesize of input 45 treesize of output 38 [2021-11-21 00:39:17,679 INFO L354 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2021-11-21 00:39:17,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 66 [2021-11-21 00:39:17,750 INFO L388 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 16 treesize of output 8 [2021-11-21 00:39:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:17,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:39:17,844 INFO L388 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 27 treesize of output 19 [2021-11-21 00:39:18,881 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= (select (select .cse1 .cse0) 4) 0)))))) is different from false [2021-11-21 00:39:20,388 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (let ((.cse1 (let ((.cse2 (store |c_#memory_$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|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (not (= (select (select .cse1 .cse0) 4) 0)))))) is different from false [2021-11-21 00:39:20,588 INFO L354 Elim1Store]: treesize reduction 264, result has 32.0 percent of original size [2021-11-21 00:39:20,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 9569 treesize of output 9194 [2021-11-21 00:39:21,151 INFO L354 Elim1Store]: treesize reduction 16, result has 80.2 percent of original size [2021-11-21 00:39:21,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 7950 treesize of output 7998 [2021-11-21 00:39:27,186 INFO L388 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 6 treesize of output 4 [2021-11-21 00:39:27,618 INFO L388 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 104 treesize of output 100 [2021-11-21 00:39:27,742 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-11-21 00:39:27,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-11-21 00:39:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-21 00:39:27,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552367051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:39:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474591635] [2021-11-21 00:39:27,874 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 00:39:27,874 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:39:27,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:39:27,875 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:39:27,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:39:27,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:27,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:27,924 INFO L388 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 [2021-11-21 00:39:27,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:27,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:27,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:27,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:27,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:39:28,255 INFO L388 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 [2021-11-21 00:39:28,294 INFO L388 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 [2021-11-21 00:39:28,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:28,312 INFO L388 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 [2021-11-21 00:39:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:28,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:28,392 INFO L388 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 [2021-11-21 00:39:28,419 INFO L388 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 [2021-11-21 00:39:28,453 INFO L388 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 [2021-11-21 00:39:28,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:28,510 INFO L388 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 [2021-11-21 00:39:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:28,536 INFO L388 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 [2021-11-21 00:39:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:28,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:28,673 INFO L388 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 [2021-11-21 00:39:29,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 00:39:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,651 INFO L388 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 [2021-11-21 00:39:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,702 INFO L388 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 [2021-11-21 00:39:29,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,839 INFO L388 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 [2021-11-21 00:39:29,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:29,945 INFO L388 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 [2021-11-21 00:39:30,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,009 INFO L388 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 [2021-11-21 00:39:30,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,155 INFO L388 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 [2021-11-21 00:39:30,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,254 INFO L388 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 [2021-11-21 00:39:30,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,393 INFO L388 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 [2021-11-21 00:39:30,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,514 INFO L388 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 [2021-11-21 00:39:30,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:30,966 INFO L388 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 [2021-11-21 00:39:31,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,093 INFO L388 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 [2021-11-21 00:39:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:31,184 INFO L388 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 [2021-11-21 00:39:32,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:32,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:32,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:32,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:32,797 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 00:39:32,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2021-11-21 00:39:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,542 INFO L388 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 [2021-11-21 00:39:33,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,594 INFO L388 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 [2021-11-21 00:39:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,632 INFO L388 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 43 treesize of output 28 [2021-11-21 00:39:33,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,745 INFO L388 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 [2021-11-21 00:39:33,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,832 INFO L388 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 41 treesize of output 37 [2021-11-21 00:39:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,892 INFO L388 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 [2021-11-21 00:39:33,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:33,989 INFO L388 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 50 treesize of output 49 [2021-11-21 00:39:34,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,046 INFO L388 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 [2021-11-21 00:39:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,082 INFO L388 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 [2021-11-21 00:39:34,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,600 INFO L388 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 [2021-11-21 00:39:34,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,638 INFO L388 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 59 treesize of output 52 [2021-11-21 00:39:34,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:34,728 INFO L388 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 [2021-11-21 00:39:37,743 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-11-21 00:39:37,743 INFO L388 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 25 treesize of output 29 [2021-11-21 00:39:38,048 INFO L388 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 [2021-11-21 00:39:38,084 INFO L354 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2021-11-21 00:39:38,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 87 [2021-11-21 00:39:38,114 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-21 00:39:38,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 60 [2021-11-21 00:39:42,076 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-11-21 00:39:42,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 45 [2021-11-21 00:39:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:42,209 INFO L354 Elim1Store]: treesize reduction 81, result has 13.8 percent of original size [2021-11-21 00:39:42,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 114 [2021-11-21 00:39:42,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:42,251 INFO L354 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2021-11-21 00:39:42,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 91 [2021-11-21 00:39:42,463 INFO L388 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 [2021-11-21 00:39:46,030 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-11-21 00:39:46,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 45 [2021-11-21 00:39:46,364 INFO L388 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 [2021-11-21 00:39:46,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:46,400 INFO L354 Elim1Store]: treesize reduction 81, result has 13.8 percent of original size [2021-11-21 00:39:46,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 114 [2021-11-21 00:39:46,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:46,426 INFO L354 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2021-11-21 00:39:46,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 91 [2021-11-21 00:39:53,662 INFO L354 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2021-11-21 00:39:53,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 388 treesize of output 403 [2021-11-21 00:39:56,744 INFO L388 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 [2021-11-21 00:39:56,788 INFO L388 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 [2021-11-21 00:39:56,906 INFO L388 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 [2021-11-21 00:39:56,914 INFO L388 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 [2021-11-21 00:39:56,982 INFO L388 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 [2021-11-21 00:39:57,038 INFO L388 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 [2021-11-21 00:39:57,059 INFO L388 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 [2021-11-21 00:39:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:57,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:57,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:57,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:39:57,203 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:39:57,203 INFO L388 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 238 treesize of output 224 [2021-11-21 00:39:57,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:57,326 INFO L388 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 [2021-11-21 00:39:57,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:57,342 INFO L388 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 [2021-11-21 00:39:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:57,388 INFO L388 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 [2021-11-21 00:39:57,591 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:40:03,465 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:40:03,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:40:03,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 32 [2021-11-21 00:40:03,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053375274] [2021-11-21 00:40:03,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:40:03,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-21 00:40:03,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:40:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-21 00:40:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1921, Unknown=2, NotChecked=182, Total=2352 [2021-11-21 00:40:03,467 INFO L87 Difference]: Start difference. First operand 167 states and 209 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2021-11-21 00:40:05,431 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| 0)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#s~0#1.base|)) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (let ((.cse1 (let ((.cse2 (store |c_#memory_$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|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (not (= (select (select .cse1 .cse0) 4) 0)))))) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0))) is different from false [2021-11-21 00:40:06,478 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (and (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| 0)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select .cse0 8) 0) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0)) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse2 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= (select (select .cse2 .cse1) 4) 0)))))) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 4)))) is different from false [2021-11-21 00:40:07,519 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (and (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| 0)) (= (select .cse0 8) 0) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse2 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= (select (select .cse2 .cse1) 4) 0)))))) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 4)))) is different from false [2021-11-21 00:40:09,104 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| 0)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (let ((.cse1 (let ((.cse2 (store |c_#memory_$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|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (not (= (select (select .cse1 .cse0) 4) 0)))))) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0))) is different from false [2021-11-21 00:40:09,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:40:09,444 INFO L93 Difference]: Finished difference Result 242 states and 294 transitions. [2021-11-21 00:40:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 00:40:09,445 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) Word has length 29 [2021-11-21 00:40:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:40:09,446 INFO L225 Difference]: With dead ends: 242 [2021-11-21 00:40:09,446 INFO L226 Difference]: Without dead ends: 240 [2021-11-21 00:40:09,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=389, Invalid=3169, Unknown=6, NotChecked=726, Total=4290 [2021-11-21 00:40:09,448 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 187 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 455 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:40:09,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 409 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 451 Invalid, 0 Unknown, 455 Unchecked, 0.3s Time] [2021-11-21 00:40:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-21 00:40:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 202. [2021-11-21 00:40:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 201 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:40:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 250 transitions. [2021-11-21 00:40:09,454 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 250 transitions. Word has length 29 [2021-11-21 00:40:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:40:09,455 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 250 transitions. [2021-11-21 00:40:09,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2021-11-21 00:40:09,455 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 250 transitions. [2021-11-21 00:40:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 00:40:09,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:40:09,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:40:09,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-21 00:40:09,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-21 00:40:09,669 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 30 more)] === [2021-11-21 00:40:09,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:40:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1252361715, now seen corresponding path program 2 times [2021-11-21 00:40:09,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:40:09,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054409530] [2021-11-21 00:40:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:09,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:40:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:10,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:40:10,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054409530] [2021-11-21 00:40:10,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054409530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:40:10,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555324001] [2021-11-21 00:40:10,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:40:10,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:40:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:40:10,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:40:10,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218286fe-1d43-4347-a880-accc8b03cb3d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 00:40:10,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:40:10,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:40:10,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-21 00:40:10,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:40:10,521 INFO L388 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 [2021-11-21 00:40:10,588 INFO L388 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 [2021-11-21 00:40:10,595 INFO L388 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 [2021-11-21 00:40:10,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:10,639 INFO L388 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 [2021-11-21 00:40:10,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:10,646 INFO L388 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 [2021-11-21 00:40:10,769 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:40:10,770 INFO L388 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 [2021-11-21 00:40:10,856 INFO L388 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 21 [2021-11-21 00:40:10,865 INFO L388 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 21 [2021-11-21 00:40:10,932 INFO L388 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 28 treesize of output 30 [2021-11-21 00:40:10,941 INFO L388 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 28 treesize of output 30 [2021-11-21 00:40:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:11,019 INFO L388 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 00:40:11,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:11,032 INFO L388 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 00:40:11,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:11,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:11,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:11,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:11,190 INFO L354 Elim1Store]: treesize reduction 179, result has 12.7 percent of original size [2021-11-21 00:40:11,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 152 treesize of output 108 [2021-11-21 00:40:11,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:11,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:40:11,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:40:11,220 INFO L354 Elim1Store]: treesize reduction 169, result has 15.9 percent of original size [2021-11-21 00:40:11,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 109 [2021-11-21 00:40:12,026 INFO L354 Elim1Store]: treesize reduction 210, result has 1.4 percent of original size [2021-11-21 00:40:12,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 286 treesize of output 145 [2021-11-21 00:40:12,064 INFO L354 Elim1Store]: treesize reduction 150, result has 2.0 percent of original size [2021-11-21 00:40:12,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 97 treesize of output 52 [2021-11-21 00:40:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:12,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:40:14,057 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (let ((.cse6 (select (select .cse0 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (select (select .cse3 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (let ((.cse5 (+ .cse6 4))) (let ((.cse1 (select (select .cse3 .cse4) .cse5)) (.cse2 (+ 4 (select (select .cse0 .cse4) .cse5)))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= 0 (select (select .cse3 .cse1) .cse2))))) (not (= .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))))) is different from false [2021-11-21 00:40:16,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse8 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse9 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse5 (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse9 0)))) (store .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (.cse2 (let ((.cse7 (store |c_#memory_$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|) .cse9 0)))) (store .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse0 (select (select .cse2 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (select (select .cse5 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (let ((.cse6 (+ .cse1 4))) (let ((.cse3 (select (select .cse2 .cse0) .cse6)) (.cse4 (+ (select (select .cse5 .cse0) .cse6) 4))) (and (= (select (select .cse2 .cse3) .cse4) 0) (= (select (select .cse5 .cse3) .cse4) 0))))))))) is different from false [2021-11-21 00:40:18,217 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse8 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse9 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse10 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse1 (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse10 0)))) (store .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (.cse4 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.offset|) .cse10 0)))) (store .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse0 (select (select .cse4 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (let ((.cse6 (+ .cse0 4))) (let ((.cse2 (select (select .cse1 .cse5) .cse6)) (.cse3 (+ (select (select .cse4 .cse5) .cse6) 4))) (and (= (select (select .cse1 .cse2) .cse3) 0) (= (select (select .cse4 .cse2) .cse3) 0)))) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))))) is different from false