./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:56:23,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:56:23,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:56:23,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:56:23,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:56:23,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:56:23,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:56:23,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:56:23,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:56:23,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:56:23,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:56:23,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:56:23,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:56:23,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:56:23,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:56:23,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:56:23,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:56:23,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:56:23,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:56:23,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:56:23,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:56:23,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:56:23,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:56:23,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:56:23,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:56:23,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:56:23,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:56:23,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:56:23,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:56:23,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:56:23,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:56:23,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:56:23,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:56:23,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:56:23,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:56:23,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:56:23,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:56:23,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:56:23,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:56:23,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:56:23,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:56:23,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-23 02:56:23,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:56:23,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:56:23,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:56:23,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:56:23,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:56:23,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:56:23,324 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:56:23,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:56:23,325 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:56:23,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:56:23,326 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:56:23,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:56:23,327 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:56:23,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:56:23,327 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:56:23,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:56:23,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:56:23,328 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:56:23,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:56:23,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:56:23,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:56:23,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:56:23,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:56:23,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:56:23,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:56:23,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:56:23,333 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:56:23,333 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:56:23,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:56:23,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:56:23,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:56:23,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:56:23,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:56:23,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:56:23,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:56:23,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:56:23,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:56:23,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:56:23,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:56:23,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:56:23,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:56:23,337 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_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 [2021-11-23 02:56:23,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:56:23,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:56:23,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:56:23,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:56:23,675 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:56:23,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-11-23 02:56:23,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/data/512bc9114/5ae0ac45759c4c069b536c45e7e08d56/FLAG280d3da8c [2021-11-23 02:56:24,323 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:56:24,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-11-23 02:56:24,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/data/512bc9114/5ae0ac45759c4c069b536c45e7e08d56/FLAG280d3da8c [2021-11-23 02:56:24,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/data/512bc9114/5ae0ac45759c4c069b536c45e7e08d56 [2021-11-23 02:56:24,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:56:24,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:56:24,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:56:24,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:56:24,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:56:24,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:56:24" (1/1) ... [2021-11-23 02:56:24,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b6ff6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:24, skipping insertion in model container [2021-11-23 02:56:24,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:56:24" (1/1) ... [2021-11-23 02:56:24,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:56:24,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:56:25,130 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_cebb331f-4b84-4f79-95ce-9ceb919ead25/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-11-23 02:56:25,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:56:25,164 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:56:25,232 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_cebb331f-4b84-4f79-95ce-9ceb919ead25/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-11-23 02:56:25,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:56:25,283 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:56:25,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25 WrapperNode [2021-11-23 02:56:25,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:56:25,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:56:25,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:56:25,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:56:25,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,375 INFO L137 Inliner]: procedures = 123, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2021-11-23 02:56:25,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:56:25,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:56:25,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:56:25,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:56:25,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:56:25,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:56:25,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:56:25,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:56:25,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (1/1) ... [2021-11-23 02:56:25,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:56:25,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:25,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:56:25,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:56:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:56:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:56:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:56:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:56:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:56:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:56:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:56:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:56:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:56:25,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:56:25,716 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:56:25,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:56:26,107 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:56:26,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:56:26,189 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:56:26,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:56:26 BoogieIcfgContainer [2021-11-23 02:56:26,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:56:26,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:56:26,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:56:26,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:56:26,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:56:24" (1/3) ... [2021-11-23 02:56:26,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710dbeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:56:26, skipping insertion in model container [2021-11-23 02:56:26,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:25" (2/3) ... [2021-11-23 02:56:26,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710dbeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:56:26, skipping insertion in model container [2021-11-23 02:56:26,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:56:26" (3/3) ... [2021-11-23 02:56:26,202 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-11-23 02:56:26,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:56:26,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-11-23 02:56:26,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:56:26,297 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 [2021-11-23 02:56:26,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-11-23 02:56:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:56:26,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:26,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:56:26,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 200758, now seen corresponding path program 1 times [2021-11-23 02:56:26,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:26,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435270341] [2021-11-23 02:56:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:26,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:26,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:26,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435270341] [2021-11-23 02:56:26,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435270341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:26,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:26,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:56:26,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977661660] [2021-11-23 02:56:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:26,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:56:26,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:56:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:26,671 INFO L87 Difference]: Start difference. First operand has 72 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:26,783 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-11-23 02:56:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 02:56:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:26,798 INFO L225 Difference]: With dead ends: 95 [2021-11-23 02:56:26,813 INFO L226 Difference]: Without dead ends: 92 [2021-11-23 02:56:26,815 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 [2021-11-23 02:56:26,820 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 24 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:26,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 130 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-23 02:56:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2021-11-23 02:56:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 70 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-11-23 02:56:26,896 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 3 [2021-11-23 02:56:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:26,897 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-11-23 02:56:26,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-11-23 02:56:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:56:26,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:26,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:56:26,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:56:26,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash 6058691, now seen corresponding path program 1 times [2021-11-23 02:56:26,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:26,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200904693] [2021-11-23 02:56:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:26,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:26,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200904693] [2021-11-23 02:56:26,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200904693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:26,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:26,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:56:26,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78680312] [2021-11-23 02:56:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:26,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:56:26,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:56:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:26,943 INFO L87 Difference]: Start difference. First operand 71 states and 79 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) [2021-11-23 02:56:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:27,096 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-11-23 02:56:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:27,097 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 [2021-11-23 02:56:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:27,099 INFO L225 Difference]: With dead ends: 93 [2021-11-23 02:56:27,103 INFO L226 Difference]: Without dead ends: 93 [2021-11-23 02:56:27,104 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 [2021-11-23 02:56:27,107 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 69 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:27,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 52 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-23 02:56:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2021-11-23 02:56:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-11-23 02:56:27,131 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 4 [2021-11-23 02:56:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:27,133 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-11-23 02:56:27,134 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) [2021-11-23 02:56:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-11-23 02:56:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:56:27,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:27,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:56:27,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:56:27,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash 6058692, now seen corresponding path program 1 times [2021-11-23 02:56:27,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206212235] [2021-11-23 02:56:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:27,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:27,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:27,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206212235] [2021-11-23 02:56:27,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206212235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:27,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:27,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:56:27,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205667853] [2021-11-23 02:56:27,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:27,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:56:27,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:27,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:56:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:27,252 INFO L87 Difference]: Start difference. First operand 66 states and 74 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) [2021-11-23 02:56:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:27,367 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-11-23 02:56:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:27,368 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 [2021-11-23 02:56:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:27,369 INFO L225 Difference]: With dead ends: 61 [2021-11-23 02:56:27,370 INFO L226 Difference]: Without dead ends: 61 [2021-11-23 02:56:27,370 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 [2021-11-23 02:56:27,372 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:27,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 38 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-23 02:56:27,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-23 02:56:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 60 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) [2021-11-23 02:56:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-23 02:56:27,387 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 4 [2021-11-23 02:56:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:27,387 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-23 02:56:27,387 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) [2021-11-23 02:56:27,387 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-23 02:56:27,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:56:27,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:27,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:27,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:56:27,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:27,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:27,389 INFO L85 PathProgramCache]: Analyzing trace with hash 703284186, now seen corresponding path program 1 times [2021-11-23 02:56:27,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:27,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485336102] [2021-11-23 02:56:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:27,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:27,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:27,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485336102] [2021-11-23 02:56:27,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485336102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:27,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:27,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:56:27,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862745749] [2021-11-23 02:56:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:27,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:56:27,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:56:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:27,488 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2021-11-23 02:56:27,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:27,546 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2021-11-23 02:56:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:27,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:56:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:27,548 INFO L225 Difference]: With dead ends: 69 [2021-11-23 02:56:27,548 INFO L226 Difference]: Without dead ends: 69 [2021-11-23 02:56:27,549 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 [2021-11-23 02:56:27,551 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:27,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 101 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-23 02:56:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-11-23 02:56:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 67 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-11-23 02:56:27,560 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 10 [2021-11-23 02:56:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:27,561 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-11-23 02:56:27,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2021-11-23 02:56:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-11-23 02:56:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:56:27,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:27,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:27,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:56:27,567 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1546396709, now seen corresponding path program 1 times [2021-11-23 02:56:27,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500091845] [2021-11-23 02:56:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:27,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:27,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:27,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500091845] [2021-11-23 02:56:27,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500091845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:27,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586951760] [2021-11-23 02:56:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:27,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:27,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:27,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:27,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:56:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:27,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:56:27,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:27,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:28,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586951760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [772592648] [2021-11-23 02:56:28,031 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 02:56:28,031 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:56:28,038 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:56:28,044 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:56:28,045 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:56:28,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,202 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 [2021-11-23 02:56:28,268 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 [2021-11-23 02:56:28,278 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 [2021-11-23 02:56:28,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-23 02:56:28,351 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 19 treesize of output 1 [2021-11-23 02:56:28,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,369 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 35 treesize of output 40 [2021-11-23 02:56:28,393 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 19 treesize of output 1 [2021-11-23 02:56:28,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:56:28,504 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 19 treesize of output 1 [2021-11-23 02:56:28,519 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 19 treesize of output 1 [2021-11-23 02:56:28,559 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 [2021-11-23 02:56:28,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:28,606 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 [2021-11-23 02:56:28,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,658 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 [2021-11-23 02:56:28,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:28,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,712 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 [2021-11-23 02:56:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-23 02:56:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 66 [2021-11-23 02:56:28,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,945 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 30 treesize of output 21 [2021-11-23 02:56:28,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:28,964 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 [2021-11-23 02:56:29,056 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 19 treesize of output 1 [2021-11-23 02:56:29,065 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 19 treesize of output 1 [2021-11-23 02:56:29,077 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 [2021-11-23 02:56:29,109 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 19 treesize of output 1 [2021-11-23 02:56:29,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,129 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 47 treesize of output 46 [2021-11-23 02:56:29,158 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 19 treesize of output 1 [2021-11-23 02:56:29,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 35 [2021-11-23 02:56:29,206 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 [2021-11-23 02:56:29,215 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 [2021-11-23 02:56:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,265 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 [2021-11-23 02:56:29,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,288 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 54 treesize of output 35 [2021-11-23 02:56:29,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,303 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 [2021-11-23 02:56:29,374 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:56:29,375 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:56:29,434 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:29,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:29,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,479 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 34 treesize of output 25 [2021-11-23 02:56:29,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,493 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 34 treesize of output 25 [2021-11-23 02:56:29,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,508 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 40 treesize of output 36 [2021-11-23 02:56:29,555 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 19 treesize of output 1 [2021-11-23 02:56:29,576 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 19 treesize of output 1 [2021-11-23 02:56:29,588 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 [2021-11-23 02:56:29,621 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 19 treesize of output 1 [2021-11-23 02:56:29,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,643 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 47 treesize of output 46 [2021-11-23 02:56:29,685 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 19 treesize of output 1 [2021-11-23 02:56:29,713 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 [2021-11-23 02:56:29,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,726 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 54 treesize of output 35 [2021-11-23 02:56:29,746 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 [2021-11-23 02:56:29,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,782 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 [2021-11-23 02:56:29,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,796 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 54 treesize of output 35 [2021-11-23 02:56:29,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:29,823 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 [2021-11-23 02:56:29,930 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:56:29,930 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:56:29,967 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:29,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:30,026 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:56:31,146 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '744#(and (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= |ULTIMATE.start_dll_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (< (select |#length| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 8)) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:56:31,146 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:56:31,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:56:31,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-23 02:56:31,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585684902] [2021-11-23 02:56:31,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:56:31,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:56:31,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:56:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:56:31,149 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:31,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:31,258 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-11-23 02:56:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:56:31,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 02:56:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:31,262 INFO L225 Difference]: With dead ends: 94 [2021-11-23 02:56:31,263 INFO L226 Difference]: Without dead ends: 94 [2021-11-23 02:56:31,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:56:31,266 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 48 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:31,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 221 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-23 02:56:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2021-11-23 02:56:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.6) internal successors, (104), 89 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2021-11-23 02:56:31,291 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 12 [2021-11-23 02:56:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:31,291 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2021-11-23 02:56:31,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2021-11-23 02:56:31,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:56:31,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:31,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 02:56:31,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:31,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:31,501 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:31,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:31,502 INFO L85 PathProgramCache]: Analyzing trace with hash 791655691, now seen corresponding path program 1 times [2021-11-23 02:56:31,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:31,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600046980] [2021-11-23 02:56:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:31,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:31,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:31,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600046980] [2021-11-23 02:56:31,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600046980] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:31,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491792476] [2021-11-23 02:56:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:31,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:31,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:31,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:31,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:56:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:31,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:56:31,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:31,715 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 [2021-11-23 02:56:31,769 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:31,770 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 [2021-11-23 02:56:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:31,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:32,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491792476] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:32,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [320190851] [2021-11-23 02:56:32,042 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 02:56:32,042 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:56:32,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:56:32,043 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:56:32,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:56:32,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,080 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 [2021-11-23 02:56:32,118 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 [2021-11-23 02:56:32,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,130 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 [2021-11-23 02:56:32,144 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 [2021-11-23 02:56:32,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,179 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 35 treesize of output 40 [2021-11-23 02:56:32,194 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 19 treesize of output 1 [2021-11-23 02:56:32,205 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 19 treesize of output 1 [2021-11-23 02:56:32,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:56:32,288 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 19 treesize of output 1 [2021-11-23 02:56:32,298 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 19 treesize of output 1 [2021-11-23 02:56:32,325 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 [2021-11-23 02:56:32,334 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 [2021-11-23 02:56:32,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:32,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,384 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 [2021-11-23 02:56:32,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,397 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 [2021-11-23 02:56:32,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:32,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-23 02:56:32,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 66 [2021-11-23 02:56:32,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,564 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 [2021-11-23 02:56:32,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,578 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 [2021-11-23 02:56:32,616 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 [2021-11-23 02:56:32,624 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 19 treesize of output 1 [2021-11-23 02:56:32,650 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 19 treesize of output 1 [2021-11-23 02:56:32,674 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 19 treesize of output 1 [2021-11-23 02:56:32,680 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 19 treesize of output 1 [2021-11-23 02:56:32,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,694 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 47 treesize of output 46 [2021-11-23 02:56:32,726 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 [2021-11-23 02:56:32,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,738 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 54 treesize of output 35 [2021-11-23 02:56:32,754 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 [2021-11-23 02:56:32,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,785 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 [2021-11-23 02:56:32,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,798 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 54 treesize of output 35 [2021-11-23 02:56:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,809 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 [2021-11-23 02:56:32,862 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:32,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:32,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 02:56:32,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,903 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 34 treesize of output 25 [2021-11-23 02:56:32,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,918 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 34 treesize of output 25 [2021-11-23 02:56:32,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:32,931 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 40 treesize of output 36 [2021-11-23 02:56:32,956 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 19 treesize of output 1 [2021-11-23 02:56:32,964 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 [2021-11-23 02:56:32,971 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 19 treesize of output 1 [2021-11-23 02:56:33,003 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 19 treesize of output 1 [2021-11-23 02:56:33,010 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 19 treesize of output 1 [2021-11-23 02:56:33,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,024 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 47 treesize of output 46 [2021-11-23 02:56:33,056 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 [2021-11-23 02:56:33,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,085 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 54 treesize of output 35 [2021-11-23 02:56:33,096 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 [2021-11-23 02:56:33,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,122 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 [2021-11-23 02:56:33,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,140 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 54 treesize of output 35 [2021-11-23 02:56:33,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:33,152 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 [2021-11-23 02:56:33,237 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:56:33,238 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:56:33,273 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:33,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:33,305 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:56:34,498 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1054#(and (= |ULTIMATE.start_dll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)) (<= |ULTIMATE.start_dll_create_~len#1| 5) (not (= (select |#valid| |ULTIMATE.start_dll_create_~head~0#1.base|) 1)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= (select |#valid| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0) (or (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0) (and (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 1))) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 20) (select |#length| |ULTIMATE.start_dll_create_~new_head~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_create_~head~0#1.offset|))' at error location [2021-11-23 02:56:34,499 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:56:34,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:56:34,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 02:56:34,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353488841] [2021-11-23 02:56:34,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:56:34,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:56:34,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:56:34,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:56:34,501 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:34,654 INFO L93 Difference]: Finished difference Result 188 states and 214 transitions. [2021-11-23 02:56:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:56:34,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-11-23 02:56:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:34,660 INFO L225 Difference]: With dead ends: 188 [2021-11-23 02:56:34,660 INFO L226 Difference]: Without dead ends: 188 [2021-11-23 02:56:34,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:56:34,668 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 227 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:34,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 175 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 98 Unchecked, 0.1s Time] [2021-11-23 02:56:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-23 02:56:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 112. [2021-11-23 02:56:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-11-23 02:56:34,703 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 19 [2021-11-23 02:56:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:34,704 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-11-23 02:56:34,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:34,704 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-11-23 02:56:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:56:34,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:34,706 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 02:56:34,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:34,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:34,921 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:34,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash 791655692, now seen corresponding path program 1 times [2021-11-23 02:56:34,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:34,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865340531] [2021-11-23 02:56:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:34,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:35,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865340531] [2021-11-23 02:56:35,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865340531] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007672068] [2021-11-23 02:56:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:35,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:35,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:35,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:56:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:35,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:56:35,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:35,113 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 [2021-11-23 02:56:35,242 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:56:35,242 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 22 treesize of output 24 [2021-11-23 02:56:35,251 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:56:35,252 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 21 treesize of output 21 [2021-11-23 02:56:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:35,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:35,637 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 40 treesize of output 36 [2021-11-23 02:56:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:35,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007672068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:35,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [840441062] [2021-11-23 02:56:35,766 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 02:56:35,766 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:56:35,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:56:35,767 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:56:35,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:56:35,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,795 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 [2021-11-23 02:56:35,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,821 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 [2021-11-23 02:56:35,830 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 [2021-11-23 02:56:35,838 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 [2021-11-23 02:56:35,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,873 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 35 treesize of output 40 [2021-11-23 02:56:35,885 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 19 treesize of output 1 [2021-11-23 02:56:35,893 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 19 treesize of output 1 [2021-11-23 02:56:35,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:56:35,940 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 19 treesize of output 1 [2021-11-23 02:56:35,948 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 19 treesize of output 1 [2021-11-23 02:56:35,970 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 [2021-11-23 02:56:35,978 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 [2021-11-23 02:56:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:35,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:36,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,036 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 [2021-11-23 02:56:36,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,046 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 [2021-11-23 02:56:36,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-23 02:56:36,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,174 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 [2021-11-23 02:56:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 66 [2021-11-23 02:56:36,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,207 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 [2021-11-23 02:56:36,245 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 [2021-11-23 02:56:36,263 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 19 treesize of output 1 [2021-11-23 02:56:36,270 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 19 treesize of output 1 [2021-11-23 02:56:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,291 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 47 treesize of output 46 [2021-11-23 02:56:36,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:56:36,319 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 19 treesize of output 1 [2021-11-23 02:56:36,339 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 [2021-11-23 02:56:36,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,350 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 54 treesize of output 35 [2021-11-23 02:56:36,365 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 [2021-11-23 02:56:36,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,387 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 [2021-11-23 02:56:36,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,398 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 54 treesize of output 35 [2021-11-23 02:56:36,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,409 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 [2021-11-23 02:56:36,460 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:36,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:36,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 02:56:36,506 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 34 treesize of output 32 [2021-11-23 02:56:36,513 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 30 treesize of output 21 [2021-11-23 02:56:36,525 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 30 treesize of output 21 [2021-11-23 02:56:36,552 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 [2021-11-23 02:56:36,564 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 19 treesize of output 1 [2021-11-23 02:56:36,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:56:36,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,609 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 47 treesize of output 46 [2021-11-23 02:56:36,629 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 19 treesize of output 1 [2021-11-23 02:56:36,638 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 19 treesize of output 1 [2021-11-23 02:56:36,657 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 [2021-11-23 02:56:36,663 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 [2021-11-23 02:56:36,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,680 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 54 treesize of output 35 [2021-11-23 02:56:36,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,706 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 [2021-11-23 02:56:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,714 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 [2021-11-23 02:56:36,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:36,726 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 54 treesize of output 35 [2021-11-23 02:56:36,819 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:36,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:36,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 02:56:36,868 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:56:38,009 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1489#(and (< (select |#length| |ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 16)) (= |ULTIMATE.start_dll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)) (<= |ULTIMATE.start_dll_create_~len#1| 5) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= (select |#valid| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0) (or (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0) (and (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 1))) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 20) (select |#length| |ULTIMATE.start_dll_create_~new_head~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_create_~head~0#1.offset|))' at error location [2021-11-23 02:56:38,009 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:56:38,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:56:38,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2021-11-23 02:56:38,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295022838] [2021-11-23 02:56:38,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:56:38,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:56:38,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:56:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:56:38,011 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:38,343 INFO L93 Difference]: Finished difference Result 186 states and 209 transitions. [2021-11-23 02:56:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:56:38,344 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 02:56:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:38,346 INFO L225 Difference]: With dead ends: 186 [2021-11-23 02:56:38,346 INFO L226 Difference]: Without dead ends: 186 [2021-11-23 02:56:38,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:56:38,347 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 304 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:38,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 258 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 165 Unchecked, 0.2s Time] [2021-11-23 02:56:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-23 02:56:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 112. [2021-11-23 02:56:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.4597701149425288) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-11-23 02:56:38,358 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 19 [2021-11-23 02:56:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:38,358 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-11-23 02:56:38,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-11-23 02:56:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:56:38,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:38,360 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-23 02:56:38,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:38,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:38,573 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash -502232580, now seen corresponding path program 1 times [2021-11-23 02:56:38,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:38,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260969075] [2021-11-23 02:56:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:38,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:56:38,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:38,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260969075] [2021-11-23 02:56:38,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260969075] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:38,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339048265] [2021-11-23 02:56:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:38,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:38,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:38,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:38,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:56:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:38,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:56:38,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:38,791 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 [2021-11-23 02:56:38,827 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:38,828 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 [2021-11-23 02:56:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:56:38,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:56:39,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339048265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:39,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507873023] [2021-11-23 02:56:39,045 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 02:56:39,045 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:56:39,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:56:39,046 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:56:39,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:56:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,074 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 [2021-11-23 02:56:39,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-23 02:56:39,112 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 [2021-11-23 02:56:39,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,121 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 [2021-11-23 02:56:39,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,153 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 35 treesize of output 40 [2021-11-23 02:56:39,165 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 19 treesize of output 1 [2021-11-23 02:56:39,174 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 19 treesize of output 1 [2021-11-23 02:56:39,201 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 19 treesize of output 1 [2021-11-23 02:56:39,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:56:39,234 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 19 treesize of output 1 [2021-11-23 02:56:39,258 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 [2021-11-23 02:56:39,266 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 [2021-11-23 02:56:39,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:39,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,312 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 [2021-11-23 02:56:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:39,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,354 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 [2021-11-23 02:56:39,596 INFO L354 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2021-11-23 02:56:39,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 337 treesize of output 335 [2021-11-23 02:56:39,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:39,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,758 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 02:56:39,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 373 treesize of output 360 [2021-11-23 02:56:39,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:56:39,779 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 1 case distinctions, treesize of input 369 treesize of output 348 [2021-11-23 02:56:39,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:56:39,811 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 1 case distinctions, treesize of input 354 treesize of output 333 [2021-11-23 02:56:39,883 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 19 treesize of output 1 [2021-11-23 02:56:39,891 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 19 treesize of output 1 [2021-11-23 02:56:39,909 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 [2021-11-23 02:56:39,937 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 19 treesize of output 1 [2021-11-23 02:56:39,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:39,951 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 47 treesize of output 46 [2021-11-23 02:56:39,971 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 19 treesize of output 1 [2021-11-23 02:56:39,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-23 02:56:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,003 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 54 treesize of output 35 [2021-11-23 02:56:40,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-23 02:56:40,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,041 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 54 treesize of output 35 [2021-11-23 02:56:40,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,052 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 [2021-11-23 02:56:40,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,068 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 [2021-11-23 02:56:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,113 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 54 treesize of output 35 [2021-11-23 02:56:40,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:40,135 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:56:40,135 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:56:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:40,163 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:56:40,163 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:56:40,220 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 [2021-11-23 02:56:40,227 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 [2021-11-23 02:56:40,243 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 [2021-11-23 02:56:40,248 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 [2021-11-23 02:56:40,254 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 [2021-11-23 02:56:40,277 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 [2021-11-23 02:56:40,292 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 19 treesize of output 1 [2021-11-23 02:56:40,299 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 19 treesize of output 1 [2021-11-23 02:56:40,324 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 19 treesize of output 1 [2021-11-23 02:56:40,330 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 19 treesize of output 1 [2021-11-23 02:56:40,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,344 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 47 treesize of output 46 [2021-11-23 02:56:40,372 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 [2021-11-23 02:56:40,379 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 [2021-11-23 02:56:40,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,389 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 54 treesize of output 35 [2021-11-23 02:56:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,424 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 54 treesize of output 35 [2021-11-23 02:56:40,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,438 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 [2021-11-23 02:56:40,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,463 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 [2021-11-23 02:56:40,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,510 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 54 treesize of output 35 [2021-11-23 02:56:40,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:40,541 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:56:40,542 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:56:40,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:40,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:40,567 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:56:40,568 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:56:40,644 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 [2021-11-23 02:56:40,649 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 [2021-11-23 02:56:40,670 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:56:41,825 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1983#(and (= |ULTIMATE.start_dll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)) (<= |ULTIMATE.start_dll_create_~len#1| 5) (not (= (select |#valid| |ULTIMATE.start_dll_create_~head~0#1.base|) 1)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= (select |#valid| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0) (or (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0) (and (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 1))) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 20) (select |#length| |ULTIMATE.start_dll_create_~new_head~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_create_~head~0#1.offset|))' at error location [2021-11-23 02:56:41,825 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:56:41,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:56:41,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 02:56:41,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144043447] [2021-11-23 02:56:41,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:56:41,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:56:41,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:56:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:56:41,828 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:41,930 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2021-11-23 02:56:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:56:41,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-23 02:56:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:41,931 INFO L225 Difference]: With dead ends: 138 [2021-11-23 02:56:41,931 INFO L226 Difference]: Without dead ends: 138 [2021-11-23 02:56:41,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:56:41,933 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 108 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:41,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 149 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2021-11-23 02:56:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-23 02:56:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 111. [2021-11-23 02:56:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 110 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-11-23 02:56:41,940 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 29 [2021-11-23 02:56:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:41,940 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-11-23 02:56:41,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-11-23 02:56:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:56:41,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:41,942 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-23 02:56:41,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:42,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 02:56:42,157 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -502232579, now seen corresponding path program 1 times [2021-11-23 02:56:42,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:42,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262245019] [2021-11-23 02:56:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:42,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:56:42,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:42,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262245019] [2021-11-23 02:56:42,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262245019] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012521061] [2021-11-23 02:56:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:42,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:42,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:42,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:42,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:56:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:42,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:56:42,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:42,410 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 [2021-11-23 02:56:42,506 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:56:42,506 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 22 treesize of output 24 [2021-11-23 02:56:42,515 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:56:42,516 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 21 treesize of output 21 [2021-11-23 02:56:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:56:42,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:42,871 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 40 treesize of output 36 [2021-11-23 02:56:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:56:43,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012521061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:43,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1411303513] [2021-11-23 02:56:43,008 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 02:56:43,009 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:56:43,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:56:43,009 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:56:43,010 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:56:43,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-23 02:56:43,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,089 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 [2021-11-23 02:56:43,098 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 [2021-11-23 02:56:43,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-23 02:56:43,130 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 19 treesize of output 1 [2021-11-23 02:56:43,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,143 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 35 treesize of output 40 [2021-11-23 02:56:43,156 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 19 treesize of output 1 [2021-11-23 02:56:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:56:43,201 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 19 treesize of output 1 [2021-11-23 02:56:43,209 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 19 treesize of output 1 [2021-11-23 02:56:43,230 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 [2021-11-23 02:56:43,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:43,263 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 [2021-11-23 02:56:43,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,290 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 [2021-11-23 02:56:43,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,300 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 [2021-11-23 02:56:43,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:43,543 INFO L354 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2021-11-23 02:56:43,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 337 treesize of output 335 [2021-11-23 02:56:43,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,711 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:56:43,712 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 1 case distinctions, treesize of input 373 treesize of output 352 [2021-11-23 02:56:43,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:43,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,756 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 02:56:43,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 358 treesize of output 345 [2021-11-23 02:56:43,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:56:43,778 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 1 case distinctions, treesize of input 354 treesize of output 333 [2021-11-23 02:56:43,831 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 [2021-11-23 02:56:43,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:56:43,842 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 19 treesize of output 1 [2021-11-23 02:56:43,867 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 19 treesize of output 1 [2021-11-23 02:56:43,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,875 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 47 treesize of output 46 [2021-11-23 02:56:43,891 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 19 treesize of output 1 [2021-11-23 02:56:43,915 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 [2021-11-23 02:56:43,924 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 [2021-11-23 02:56:43,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,966 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 54 treesize of output 35 [2021-11-23 02:56:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:43,989 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 [2021-11-23 02:56:44,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,011 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 54 treesize of output 35 [2021-11-23 02:56:44,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,022 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 [2021-11-23 02:56:44,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:44,075 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:56:44,076 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:56:44,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:44,121 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:56:44,121 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:56:44,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,143 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 54 treesize of output 35 [2021-11-23 02:56:44,180 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 [2021-11-23 02:56:44,186 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 [2021-11-23 02:56:44,203 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 [2021-11-23 02:56:44,212 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 [2021-11-23 02:56:44,217 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 [2021-11-23 02:56:44,240 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 19 treesize of output 1 [2021-11-23 02:56:44,265 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 [2021-11-23 02:56:44,279 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 19 treesize of output 1 [2021-11-23 02:56:44,308 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 19 treesize of output 1 [2021-11-23 02:56:44,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,317 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 47 treesize of output 46 [2021-11-23 02:56:44,335 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 19 treesize of output 1 [2021-11-23 02:56:44,364 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 13 treesize of output 9 [2021-11-23 02:56:44,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,375 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 54 treesize of output 35 [2021-11-23 02:56:44,386 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 [2021-11-23 02:56:44,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,420 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 [2021-11-23 02:56:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,431 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 54 treesize of output 35 [2021-11-23 02:56:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,451 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 [2021-11-23 02:56:44,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:44,503 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:56:44,503 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:56:44,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,519 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 54 treesize of output 35 [2021-11-23 02:56:44,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:44,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:56:44,552 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:56:44,553 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:56:44,623 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 [2021-11-23 02:56:44,628 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 [2021-11-23 02:56:44,642 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:56:45,918 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2428#(and (< (select |#length| |ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 16)) (= |ULTIMATE.start_dll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)) (<= |ULTIMATE.start_dll_create_~len#1| 5) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= (select |#valid| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0) (or (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0) (and (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 1))) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 12)) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 20) (select |#length| |ULTIMATE.start_dll_create_~new_head~0#1.base|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_create_~head~0#1.offset|))' at error location [2021-11-23 02:56:45,918 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:56:45,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:56:45,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2021-11-23 02:56:45,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445654231] [2021-11-23 02:56:45,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:56:45,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:56:45,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:56:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:56:45,920 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:46,168 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2021-11-23 02:56:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:56:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-23 02:56:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:46,170 INFO L225 Difference]: With dead ends: 137 [2021-11-23 02:56:46,170 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 02:56:46,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:56:46,171 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 367 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:46,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 98 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 105 Unchecked, 0.1s Time] [2021-11-23 02:56:46,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 02:56:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 88. [2021-11-23 02:56:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.5076923076923077) internal successors, (98), 87 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) [2021-11-23 02:56:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-11-23 02:56:46,177 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 29 [2021-11-23 02:56:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:46,177 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-11-23 02:56:46,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-11-23 02:56:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 02:56:46,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:46,179 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2021-11-23 02:56:46,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:46,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 02:56:46,380 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:46,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1983746550, now seen corresponding path program 2 times [2021-11-23 02:56:46,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:46,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092631995] [2021-11-23 02:56:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:46,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 02:56:46,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:46,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092631995] [2021-11-23 02:56:46,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092631995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:46,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074141586] [2021-11-23 02:56:46,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:56:46,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:46,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:46,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:46,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:56:46,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 02:56:46,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:56:46,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 02:56:46,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-23 02:56:46,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:56:46,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074141586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:46,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:56:46,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-23 02:56:46,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744240922] [2021-11-23 02:56:46,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:46,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:56:46,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:56:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:56:46,665 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2021-11-23 02:56:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:46,836 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2021-11-23 02:56:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:56:46,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 39 [2021-11-23 02:56:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:46,837 INFO L225 Difference]: With dead ends: 126 [2021-11-23 02:56:46,837 INFO L226 Difference]: Without dead ends: 126 [2021-11-23 02:56:46,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:56:46,838 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 344 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:46,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 41 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:46,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-23 02:56:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2021-11-23 02:56:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.5903614457831325) internal successors, (132), 105 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2021-11-23 02:56:46,843 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 39 [2021-11-23 02:56:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:46,843 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2021-11-23 02:56:46,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2021-11-23 02:56:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2021-11-23 02:56:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 02:56:46,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:46,845 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2021-11-23 02:56:46,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:47,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:47,057 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1983746549, now seen corresponding path program 1 times [2021-11-23 02:56:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:47,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613602654] [2021-11-23 02:56:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:47,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 02:56:47,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:47,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613602654] [2021-11-23 02:56:47,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613602654] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:47,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365196657] [2021-11-23 02:56:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:47,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:47,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:47,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:47,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:56:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:47,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:56:47,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:47,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:47,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365196657] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:47,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130248813] [2021-11-23 02:56:47,454 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 02:56:47,454 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:56:47,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:56:47,455 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:56:47,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:56:47,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,483 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 [2021-11-23 02:56:47,510 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 [2021-11-23 02:56:47,527 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 [2021-11-23 02:56:47,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,539 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 [2021-11-23 02:56:47,567 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 19 treesize of output 1 [2021-11-23 02:56:47,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,578 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 35 treesize of output 40 [2021-11-23 02:56:47,599 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 19 treesize of output 1 [2021-11-23 02:56:47,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:56:47,646 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 19 treesize of output 1 [2021-11-23 02:56:47,653 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 19 treesize of output 1 [2021-11-23 02:56:47,686 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 [2021-11-23 02:56:47,695 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 [2021-11-23 02:56:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,736 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 [2021-11-23 02:56:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,743 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 [2021-11-23 02:56:47,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:56:47,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 02:56:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,887 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 [2021-11-23 02:56:47,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 70 [2021-11-23 02:56:47,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:47,923 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 [2021-11-23 02:56:47,960 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 19 treesize of output 1 [2021-11-23 02:56:47,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-23 02:56:47,972 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 19 treesize of output 1 [2021-11-23 02:56:47,997 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 19 treesize of output 1 [2021-11-23 02:56:48,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,007 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 47 treesize of output 46 [2021-11-23 02:56:48,021 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 19 treesize of output 1 [2021-11-23 02:56:48,034 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 [2021-11-23 02:56:48,040 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 [2021-11-23 02:56:48,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,053 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 54 treesize of output 35 [2021-11-23 02:56:48,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,075 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 54 treesize of output 35 [2021-11-23 02:56:48,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,083 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 [2021-11-23 02:56:48,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,095 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 [2021-11-23 02:56:48,140 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:56:48,140 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 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:56:48,170 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:48,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:48,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,195 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 34 treesize of output 25 [2021-11-23 02:56:48,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,204 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 34 treesize of output 25 [2021-11-23 02:56:48,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,211 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 40 treesize of output 36 [2021-11-23 02:56:48,232 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 [2021-11-23 02:56:48,238 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 19 treesize of output 1 [2021-11-23 02:56:48,250 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 19 treesize of output 1 [2021-11-23 02:56:48,297 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 19 treesize of output 1 [2021-11-23 02:56:48,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,307 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 47 treesize of output 46 [2021-11-23 02:56:48,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:56:48,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,352 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 54 treesize of output 35 [2021-11-23 02:56:48,379 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 [2021-11-23 02:56:48,386 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 [2021-11-23 02:56:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,406 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 [2021-11-23 02:56:48,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,416 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 54 treesize of output 35 [2021-11-23 02:56:48,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:48,430 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 [2021-11-23 02:56:48,500 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:56:48,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:56:48,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 02:56:48,524 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:56:49,418 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3270#(and (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= |ULTIMATE.start_dll_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |ULTIMATE.start_main_~len~0#1| 5) (not (= (select |#valid| |ULTIMATE.start_main_~head~1#1.base|) 1)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:56:49,418 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:56:49,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:56:49,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 9 [2021-11-23 02:56:49,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723614092] [2021-11-23 02:56:49,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:56:49,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:56:49,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:56:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:56:49,420 INFO L87 Difference]: Start difference. First operand 106 states and 132 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:49,597 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2021-11-23 02:56:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:56:49,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 02:56:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:49,598 INFO L225 Difference]: With dead ends: 116 [2021-11-23 02:56:49,599 INFO L226 Difference]: Without dead ends: 116 [2021-11-23 02:56:49,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:56:49,599 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 170 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:49,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 133 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-23 02:56:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-23 02:56:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 115 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-23 02:56:49,607 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 39 [2021-11-23 02:56:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:49,608 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-23 02:56:49,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-23 02:56:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 02:56:49,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:49,617 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-11-23 02:56:49,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 02:56:49,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:49,818 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1098148960, now seen corresponding path program 1 times [2021-11-23 02:56:49,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:49,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261978542] [2021-11-23 02:56:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:49,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:56:49,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:49,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261978542] [2021-11-23 02:56:49,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261978542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:49,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:49,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:56:49,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432968830] [2021-11-23 02:56:49,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:49,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:56:49,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:56:49,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:56:49,926 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:50,049 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2021-11-23 02:56:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:56:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-23 02:56:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:50,050 INFO L225 Difference]: With dead ends: 130 [2021-11-23 02:56:50,050 INFO L226 Difference]: Without dead ends: 130 [2021-11-23 02:56:50,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:56:50,051 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 157 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:50,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 48 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-23 02:56:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 110. [2021-11-23 02:56:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 1.3263157894736841) internal successors, (126), 109 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-11-23 02:56:50,056 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 52 [2021-11-23 02:56:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:50,056 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-11-23 02:56:50,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-11-23 02:56:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 02:56:50,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:50,058 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:50,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:56:50,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash 189814222, now seen corresponding path program 1 times [2021-11-23 02:56:50,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:50,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001584976] [2021-11-23 02:56:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:50,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-23 02:56:50,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001584976] [2021-11-23 02:56:50,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001584976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:50,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:50,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:56:50,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733529448] [2021-11-23 02:56:50,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:50,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:56:50,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:56:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:56:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:56:50,144 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:50,245 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2021-11-23 02:56:50,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:56:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 55 [2021-11-23 02:56:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:50,247 INFO L225 Difference]: With dead ends: 118 [2021-11-23 02:56:50,247 INFO L226 Difference]: Without dead ends: 118 [2021-11-23 02:56:50,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:56:50,248 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 191 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:50,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 58 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-23 02:56:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2021-11-23 02:56:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-11-23 02:56:50,253 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 55 [2021-11-23 02:56:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:50,253 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-11-23 02:56:50,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-11-23 02:56:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 02:56:50,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:50,255 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:50,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:56:50,256 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:56:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash -373628439, now seen corresponding path program 1 times [2021-11-23 02:56:50,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:50,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533689614] [2021-11-23 02:56:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:50,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-23 02:56:50,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:50,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533689614] [2021-11-23 02:56:50,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533689614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:50,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61454028] [2021-11-23 02:56:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:50,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:50,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:50,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:50,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:56:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:50,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 02:56:50,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:50,648 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 [2021-11-23 02:56:50,721 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:56:50,722 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 [2021-11-23 02:56:50,756 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 [2021-11-23 02:56:50,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,784 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 21 treesize of output 20 [2021-11-23 02:56:50,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,823 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 32 [2021-11-23 02:56:50,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,842 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 36 treesize of output 23 [2021-11-23 02:56:50,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,859 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 36 treesize of output 23 [2021-11-23 02:56:50,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:56:50,894 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-11-23 02:56:50,895 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 40 treesize of output 27 [2021-11-23 02:56:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 02:56:51,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:55,213 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= 0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) v_DerPreprocessor_2)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_1))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) is different from false [2021-11-23 02:57:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 1 not checked. [2021-11-23 02:57:21,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61454028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:57:21,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [557571395] [2021-11-23 02:57:21,653 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-23 02:57:21,654 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:57:21,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:57:21,654 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:57:21,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:57:21,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,683 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 [2021-11-23 02:57:21,716 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 [2021-11-23 02:57:21,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,728 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 [2021-11-23 02:57:21,740 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 [2021-11-23 02:57:21,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,769 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 35 treesize of output 40 [2021-11-23 02:57:21,779 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 19 treesize of output 1 [2021-11-23 02:57:21,794 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 19 treesize of output 1 [2021-11-23 02:57:21,820 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 19 treesize of output 1 [2021-11-23 02:57:21,828 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 19 treesize of output 1 [2021-11-23 02:57:21,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:57:21,883 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 [2021-11-23 02:57:21,889 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 [2021-11-23 02:57:21,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:57:21,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,945 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 [2021-11-23 02:57:21,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,957 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 [2021-11-23 02:57:21,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:21,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:57:22,223 INFO L354 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2021-11-23 02:57:22,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 337 treesize of output 335 [2021-11-23 02:57:22,348 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 [2021-11-23 02:57:22,359 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 [2021-11-23 02:57:22,364 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 11 treesize of output 7 [2021-11-23 02:57:22,382 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 19 treesize of output 1 [2021-11-23 02:57:22,388 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 19 treesize of output 1 [2021-11-23 02:57:22,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,396 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 21 treesize of output 20 [2021-11-23 02:57:22,426 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 19 treesize of output 1 [2021-11-23 02:57:22,432 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 19 treesize of output 1 [2021-11-23 02:57:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,443 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 54 treesize of output 56 [2021-11-23 02:57:22,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,500 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 61 treesize of output 45 [2021-11-23 02:57:22,509 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 [2021-11-23 02:57:22,520 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 [2021-11-23 02:57:22,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,545 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 [2021-11-23 02:57:22,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,560 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 [2021-11-23 02:57:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,575 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 61 treesize of output 45 [2021-11-23 02:57:22,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:22,630 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:57:22,631 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:57:22,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,651 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 61 treesize of output 45 [2021-11-23 02:57:22,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:22,683 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:57:22,683 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:57:22,726 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 [2021-11-23 02:57:22,732 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 [2021-11-23 02:57:22,752 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 [2021-11-23 02:57:22,759 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 [2021-11-23 02:57:22,787 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 11 treesize of output 7 [2021-11-23 02:57:22,818 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 19 treesize of output 1 [2021-11-23 02:57:22,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,827 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 21 treesize of output 20 [2021-11-23 02:57:22,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:57:22,866 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 19 treesize of output 1 [2021-11-23 02:57:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,878 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 54 treesize of output 56 [2021-11-23 02:57:22,898 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 19 treesize of output 1 [2021-11-23 02:57:22,920 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 [2021-11-23 02:57:22,927 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 [2021-11-23 02:57:22,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,940 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 61 treesize of output 45 [2021-11-23 02:57:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,973 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 [2021-11-23 02:57:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,982 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 [2021-11-23 02:57:22,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,003 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 61 treesize of output 45 [2021-11-23 02:57:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:23,067 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:57:23,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:57:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:23,096 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:57:23,096 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:57:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:23,123 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 61 treesize of output 45 [2021-11-23 02:57:23,350 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 [2021-11-23 02:57:23,355 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 [2021-11-23 02:57:23,365 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:57:26,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4383#(and (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 4)) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 4)) 0))) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~head~1#1.base|) |ULTIMATE.start_main_~head~1#1.offset|) 0)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (= |ULTIMATE.start_dll_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= (+ |ULTIMATE.start_main_~head~1#1.offset| 8) (select |#length| |ULTIMATE.start_main_~head~1#1.base|)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select |#valid| |ULTIMATE.start_main_~head~1#1.base|) 1))' at error location [2021-11-23 02:57:26,092 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:57:26,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:57:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 14] total 23 [2021-11-23 02:57:26,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652128258] [2021-11-23 02:57:26,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:57:26,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 02:57:26,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:57:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 02:57:26,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1174, Unknown=30, NotChecked=72, Total=1482 [2021-11-23 02:57:26,094 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 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) [2021-11-23 02:57:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:57:26,786 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2021-11-23 02:57:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:57:26,787 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 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 59 [2021-11-23 02:57:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:57:26,788 INFO L225 Difference]: With dead ends: 137 [2021-11-23 02:57:26,789 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 02:57:26,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 145 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=389, Invalid=2035, Unknown=30, NotChecked=96, Total=2550 [2021-11-23 02:57:26,791 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 372 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:57:26,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 291 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 381 Invalid, 0 Unknown, 145 Unchecked, 0.3s Time] [2021-11-23 02:57:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 02:57:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 112. [2021-11-23 02:57:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 97 states have (on average 1.309278350515464) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:57:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-11-23 02:57:26,795 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 59 [2021-11-23 02:57:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:57:26,795 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-11-23 02:57:26,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 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) [2021-11-23 02:57:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-11-23 02:57:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 02:57:26,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:57:26,797 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:57:26,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:57:27,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 02:57:27,013 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:57:27,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:57:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1442694695, now seen corresponding path program 1 times [2021-11-23 02:57:27,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:57:27,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364915162] [2021-11-23 02:57:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:57:27,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:57:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:57:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 02:57:27,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:57:27,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364915162] [2021-11-23 02:57:27,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364915162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:57:27,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94019598] [2021-11-23 02:57:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:57:27,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:57:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:57:27,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:57:27,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:57:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:57:27,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 02:57:27,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:57:27,561 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 [2021-11-23 02:57:27,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:57:27,619 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 [2021-11-23 02:57:27,642 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 [2021-11-23 02:57:27,675 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 02:57:27,675 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:57:27,693 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 02:57:27,694 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 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-23 02:57:27,712 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 02:57:27,712 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 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-23 02:57:27,734 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-23 02:57:27,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-23 02:57:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 02:57:27,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:57:30,105 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) v_DerPreprocessor_5)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_4))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0)) is different from false [2021-11-23 02:57:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 1 not checked. [2021-11-23 02:57:47,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94019598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:57:47,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1435993864] [2021-11-23 02:57:47,850 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-23 02:57:47,850 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:57:47,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:57:47,851 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:57:47,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:57:47,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:47,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:47,878 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 [2021-11-23 02:57:47,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:47,913 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 [2021-11-23 02:57:47,922 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 [2021-11-23 02:57:47,930 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 [2021-11-23 02:57:47,953 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 19 treesize of output 1 [2021-11-23 02:57:47,963 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 19 treesize of output 1 [2021-11-23 02:57:47,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:47,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:47,974 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 35 treesize of output 40 [2021-11-23 02:57:48,006 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 19 treesize of output 1 [2021-11-23 02:57:48,013 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 19 treesize of output 1 [2021-11-23 02:57:48,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:57:48,058 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 [2021-11-23 02:57:48,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:57:48,086 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 [2021-11-23 02:57:48,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,110 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 [2021-11-23 02:57:48,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,120 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 [2021-11-23 02:57:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:57:48,345 INFO L354 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2021-11-23 02:57:48,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 337 treesize of output 335 [2021-11-23 02:57:48,455 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 11 treesize of output 7 [2021-11-23 02:57:48,461 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 [2021-11-23 02:57:48,473 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 [2021-11-23 02:57:48,502 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 19 treesize of output 1 [2021-11-23 02:57:48,509 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 19 treesize of output 1 [2021-11-23 02:57:48,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,525 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 21 treesize of output 20 [2021-11-23 02:57:48,547 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 19 treesize of output 1 [2021-11-23 02:57:48,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,562 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 54 treesize of output 56 [2021-11-23 02:57:48,577 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 19 treesize of output 1 [2021-11-23 02:57:48,593 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 [2021-11-23 02:57:48,599 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 [2021-11-23 02:57:48,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,615 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 61 treesize of output 45 [2021-11-23 02:57:48,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,644 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 61 treesize of output 45 [2021-11-23 02:57:48,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,653 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 [2021-11-23 02:57:48,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,662 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 [2021-11-23 02:57:48,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,709 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 61 treesize of output 45 [2021-11-23 02:57:48,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:48,727 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:57:48,727 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:57:48,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:48,753 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:57:48,754 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:57:48,793 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 [2021-11-23 02:57:48,798 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 [2021-11-23 02:57:48,819 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 [2021-11-23 02:57:48,824 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 [2021-11-23 02:57:48,833 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 11 treesize of output 7 [2021-11-23 02:57:48,851 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 19 treesize of output 1 [2021-11-23 02:57:48,864 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 19 treesize of output 1 [2021-11-23 02:57:48,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,884 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 21 treesize of output 20 [2021-11-23 02:57:48,907 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 19 treesize of output 1 [2021-11-23 02:57:48,917 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 19 treesize of output 1 [2021-11-23 02:57:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,928 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 54 treesize of output 56 [2021-11-23 02:57:48,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:48,959 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 61 treesize of output 45 [2021-11-23 02:57:48,967 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 [2021-11-23 02:57:48,987 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 [2021-11-23 02:57:49,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,026 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 61 treesize of output 45 [2021-11-23 02:57:49,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,044 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 [2021-11-23 02:57:49,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,057 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 [2021-11-23 02:57:49,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:49,119 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:57:49,119 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:57:49,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,147 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 61 treesize of output 45 [2021-11-23 02:57:49,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:49,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:57:49,175 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:57:49,176 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:57:49,426 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 [2021-11-23 02:57:49,431 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 [2021-11-23 02:57:49,441 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:57:52,626 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5052#(and (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= (+ |ULTIMATE.start_main_~head~1#1.offset| 12) (select |#length| |ULTIMATE.start_main_~head~1#1.base|)) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 4)) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 4)) 0))) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (= |ULTIMATE.start_dll_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |ULTIMATE.start_main_~len~0#1| 5) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 8)) 0)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~head~1#1.base|) |ULTIMATE.start_main_~head~1#1.offset|) 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select |#valid| |ULTIMATE.start_main_~head~1#1.base|) 1))' at error location [2021-11-23 02:57:52,626 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:57:52,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:57:52,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 23 [2021-11-23 02:57:52,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164130230] [2021-11-23 02:57:52,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:57:52,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 02:57:52,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:57:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 02:57:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1308, Unknown=16, NotChecked=76, Total=1640 [2021-11-23 02:57:52,629 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:57:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:57:53,273 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2021-11-23 02:57:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:57:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 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 60 [2021-11-23 02:57:53,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:57:53,275 INFO L225 Difference]: With dead ends: 137 [2021-11-23 02:57:53,275 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 02:57:53,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 155 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=448, Invalid=2402, Unknown=16, NotChecked=104, Total=2970 [2021-11-23 02:57:53,277 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 384 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:57:53,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 336 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 353 Invalid, 0 Unknown, 155 Unchecked, 0.3s Time] [2021-11-23 02:57:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 02:57:53,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 112. [2021-11-23 02:57:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 111 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:57:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2021-11-23 02:57:53,281 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 60 [2021-11-23 02:57:53,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:57:53,282 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2021-11-23 02:57:53,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:57:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2021-11-23 02:57:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:57:53,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:57:53,283 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:57:53,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-23 02:57:53,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 02:57:53,483 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:57:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:57:53,484 INFO L85 PathProgramCache]: Analyzing trace with hash -293037924, now seen corresponding path program 1 times [2021-11-23 02:57:53,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:57:53,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609810800] [2021-11-23 02:57:53,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:57:53,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:57:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:57:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-23 02:57:53,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:57:53,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609810800] [2021-11-23 02:57:53,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609810800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:57:53,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156725931] [2021-11-23 02:57:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:57:53,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:57:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:57:53,643 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:57:53,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 02:57:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:57:53,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 02:57:53,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:57:53,787 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 [2021-11-23 02:57:53,870 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:57:53,870 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 [2021-11-23 02:57:53,924 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 [2021-11-23 02:57:53,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:53,984 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 [2021-11-23 02:57:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:54,060 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:57:54,061 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 55 treesize of output 42 [2021-11-23 02:57:54,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:57:54,220 INFO L354 Elim1Store]: treesize reduction 47, result has 14.5 percent of original size [2021-11-23 02:57:54,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 29 [2021-11-23 02:57:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 02:57:54,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:58:02,733 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 196 treesize of output 190 [2021-11-23 02:58:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 02:58:05,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156725931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:58:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091469855] [2021-11-23 02:58:05,227 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-23 02:58:05,228 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:58:05,228 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:58:05,228 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:58:05,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:58:05,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,258 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 [2021-11-23 02:58:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,282 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 [2021-11-23 02:58:05,289 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 [2021-11-23 02:58:05,297 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 [2021-11-23 02:58:05,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,318 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 35 treesize of output 40 [2021-11-23 02:58:05,339 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 19 treesize of output 1 [2021-11-23 02:58:05,350 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 19 treesize of output 1 [2021-11-23 02:58:05,373 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 19 treesize of output 1 [2021-11-23 02:58:05,384 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 19 treesize of output 1 [2021-11-23 02:58:05,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-23 02:58:05,422 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 [2021-11-23 02:58:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:58:05,448 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 [2021-11-23 02:58:05,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,486 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 [2021-11-23 02:58:05,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,494 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 [2021-11-23 02:58:05,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-23 02:58:05,695 INFO L354 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2021-11-23 02:58:05,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 337 treesize of output 335 [2021-11-23 02:58:05,797 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 [2021-11-23 02:58:05,802 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 [2021-11-23 02:58:05,812 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 11 treesize of output 7 [2021-11-23 02:58:05,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,830 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 21 treesize of output 20 [2021-11-23 02:58:05,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:58:05,845 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 19 treesize of output 1 [2021-11-23 02:58:05,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,864 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 54 treesize of output 56 [2021-11-23 02:58:05,877 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 19 treesize of output 1 [2021-11-23 02:58:05,885 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 19 treesize of output 1 [2021-11-23 02:58:05,898 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 [2021-11-23 02:58:05,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,913 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 61 treesize of output 45 [2021-11-23 02:58:05,920 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 [2021-11-23 02:58:05,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,940 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 [2021-11-23 02:58:05,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,968 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 [2021-11-23 02:58:05,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:05,979 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 61 treesize of output 45 [2021-11-23 02:58:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:58:06,034 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:58:06,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:58:06,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:58:06,052 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:58:06,053 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:58:06,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,071 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 61 treesize of output 45 [2021-11-23 02:58:06,115 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 [2021-11-23 02:58:06,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-23 02:58:06,136 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 11 treesize of output 7 [2021-11-23 02:58:06,149 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 [2021-11-23 02:58:06,158 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 [2021-11-23 02:58:06,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,183 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 21 treesize of output 20 [2021-11-23 02:58:06,188 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 19 treesize of output 1 [2021-11-23 02:58:06,193 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 19 treesize of output 1 [2021-11-23 02:58:06,216 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 19 treesize of output 1 [2021-11-23 02:58:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,224 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 54 treesize of output 56 [2021-11-23 02:58:06,254 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 19 treesize of output 1 [2021-11-23 02:58:06,273 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 [2021-11-23 02:58:06,278 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 [2021-11-23 02:58:06,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2021-11-23 02:58:06,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,324 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 [2021-11-23 02:58:06,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,336 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 61 treesize of output 45 [2021-11-23 02:58:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,345 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 [2021-11-23 02:58:06,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:58:06,383 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:58:06,383 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-23 02:58:06,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,417 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 61 treesize of output 45 [2021-11-23 02:58:06,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:58:06,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:58:06,442 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-23 02:58:06,442 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 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:58:06,674 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 [2021-11-23 02:58:06,681 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 [2021-11-23 02:58:06,687 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:58:09,900 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5745#(and (not (= |ULTIMATE.start_main_~head~1#1.base| 0)) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 4)) 0) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~head~1#1.base|) |ULTIMATE.start_main_~head~1#1.offset|) 0)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_~new_head~0#1.base|) (= |ULTIMATE.start_dll_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= (+ |ULTIMATE.start_main_~head~1#1.offset| 16) (select |#length| |ULTIMATE.start_main_~head~1#1.base|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (<= 5 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 4)) 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (= |ULTIMATE.start_main_~temp~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 12))) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 5) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~1#1.base|) (+ |ULTIMATE.start_main_~head~1#1.offset| 12)) |ULTIMATE.start_main_~temp~0#1.base|) (= |#NULL.base| 0) (= (select |#valid| |ULTIMATE.start_main_~head~1#1.base|) 1))' at error location [2021-11-23 02:58:09,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:58:09,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:58:09,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 29 [2021-11-23 02:58:09,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165752591] [2021-11-23 02:58:09,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:58:09,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 02:58:09,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:58:09,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 02:58:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1903, Unknown=7, NotChecked=0, Total=2162 [2021-11-23 02:58:09,903 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand has 29 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 29 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:58:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:58:10,417 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2021-11-23 02:58:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:58:10,419 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 29 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-23 02:58:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:58:10,419 INFO L225 Difference]: With dead ends: 107 [2021-11-23 02:58:10,419 INFO L226 Difference]: Without dead ends: 104 [2021-11-23 02:58:10,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 142 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=403, Invalid=3012, Unknown=7, NotChecked=0, Total=3422 [2021-11-23 02:58:10,422 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:58:10,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 618 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 314 Invalid, 0 Unknown, 213 Unchecked, 0.2s Time] [2021-11-23 02:58:10,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-23 02:58:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-11-23 02:58:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 101 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:58:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2021-11-23 02:58:10,428 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 61 [2021-11-23 02:58:10,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:58:10,428 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2021-11-23 02:58:10,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 29 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:58:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2021-11-23 02:58:10,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:58:10,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:58:10,429 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:58:10,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:58:10,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:58:10,645 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-23 02:58:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:58:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1773996293, now seen corresponding path program 1 times [2021-11-23 02:58:10,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:58:10,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141381596] [2021-11-23 02:58:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:58:10,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:58:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:58:10,732 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:58:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:58:10,880 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:58:10,880 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:58:10,881 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK (34 of 35 remaining) [2021-11-23 02:58:10,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (33 of 35 remaining) [2021-11-23 02:58:10,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (32 of 35 remaining) [2021-11-23 02:58:10,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (31 of 35 remaining) [2021-11-23 02:58:10,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (30 of 35 remaining) [2021-11-23 02:58:10,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (29 of 35 remaining) [2021-11-23 02:58:10,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (28 of 35 remaining) [2021-11-23 02:58:10,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (27 of 35 remaining) [2021-11-23 02:58:10,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (26 of 35 remaining) [2021-11-23 02:58:10,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (25 of 35 remaining) [2021-11-23 02:58:10,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (24 of 35 remaining) [2021-11-23 02:58:10,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (23 of 35 remaining) [2021-11-23 02:58:10,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (22 of 35 remaining) [2021-11-23 02:58:10,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (21 of 35 remaining) [2021-11-23 02:58:10,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (20 of 35 remaining) [2021-11-23 02:58:10,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (19 of 35 remaining) [2021-11-23 02:58:10,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (18 of 35 remaining) [2021-11-23 02:58:10,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (17 of 35 remaining) [2021-11-23 02:58:10,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (16 of 35 remaining) [2021-11-23 02:58:10,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (15 of 35 remaining) [2021-11-23 02:58:10,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (14 of 35 remaining) [2021-11-23 02:58:10,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (13 of 35 remaining) [2021-11-23 02:58:10,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (12 of 35 remaining) [2021-11-23 02:58:10,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (11 of 35 remaining) [2021-11-23 02:58:10,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (10 of 35 remaining) [2021-11-23 02:58:10,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (9 of 35 remaining) [2021-11-23 02:58:10,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (8 of 35 remaining) [2021-11-23 02:58:10,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (7 of 35 remaining) [2021-11-23 02:58:10,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (6 of 35 remaining) [2021-11-23 02:58:10,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (5 of 35 remaining) [2021-11-23 02:58:10,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (4 of 35 remaining) [2021-11-23 02:58:10,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (3 of 35 remaining) [2021-11-23 02:58:10,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (2 of 35 remaining) [2021-11-23 02:58:10,889 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (1 of 35 remaining) [2021-11-23 02:58:10,889 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (0 of 35 remaining) [2021-11-23 02:58:10,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:58:10,893 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:58:10,898 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:58:10,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:58:10 BoogieIcfgContainer [2021-11-23 02:58:10,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:58:10,996 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:58:10,996 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:58:10,996 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:58:10,997 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:56:26" (3/4) ... [2021-11-23 02:58:11,000 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:58:11,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:58:11,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:58:11,092 INFO L158 Benchmark]: Toolchain (without parser) took 106469.65ms. Allocated memory was 107.0MB in the beginning and 237.0MB in the end (delta: 130.0MB). Free memory was 62.7MB in the beginning and 77.5MB in the end (delta: -14.8MB). Peak memory consumption was 115.3MB. Max. memory is 16.1GB. [2021-11-23 02:58:11,093 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:58:11,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.73ms. Allocated memory is still 107.0MB. Free memory was 62.5MB in the beginning and 72.4MB in the end (delta: -9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:58:11,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.70ms. Allocated memory is still 107.0MB. Free memory was 72.4MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:58:11,095 INFO L158 Benchmark]: Boogie Preprocessor took 39.38ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:58:11,096 INFO L158 Benchmark]: RCFGBuilder took 774.56ms. Allocated memory is still 107.0MB. Free memory was 68.6MB in the beginning and 50.1MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 02:58:11,096 INFO L158 Benchmark]: TraceAbstraction took 104800.97ms. Allocated memory was 107.0MB in the beginning and 237.0MB in the end (delta: 130.0MB). Free memory was 49.7MB in the beginning and 81.7MB in the end (delta: -32.0MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. [2021-11-23 02:58:11,096 INFO L158 Benchmark]: Witness Printer took 91.59ms. Allocated memory is still 237.0MB. Free memory was 81.7MB in the beginning and 77.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:58:11,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.73ms. Allocated memory is still 107.0MB. Free memory was 62.5MB in the beginning and 72.4MB in the end (delta: -9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.70ms. Allocated memory is still 107.0MB. Free memory was 72.4MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.38ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 774.56ms. Allocated memory is still 107.0MB. Free memory was 68.6MB in the beginning and 50.1MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 104800.97ms. Allocated memory was 107.0MB in the beginning and 237.0MB in the end (delta: 130.0MB). Free memory was 49.7MB in the beginning and 81.7MB in the end (delta: -32.0MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. * Witness Printer took 91.59ms. Allocated memory is still 237.0MB. Free memory was 81.7MB in the beginning and 77.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 616]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L599] const int len = 5; [L600] CALL, EXPR dll_create(len) [L579] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, new_head={-1:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L590] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-1:0}, len=4, new_head={-1:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=0, __VERIFIER_nondet_int() == len? 1 : 0=0, head={-1:0}, len=4, new_head={-2:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-2:0}, len=3, new_head={-2:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, new_head={-3:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-3:0}, len=2, new_head={-3:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, new_head={-4:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-4:0}, len=1, new_head={-4:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, new_head={-5:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-5:0}, len=0, new_head={-5:0}] [L580] COND FALSE !(len > 0) [L596] return head; [L600] RET, EXPR dll_create(len) [L600] DLL head = dll_create(len); [L601] head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L601] COND TRUE head->next [L602] EXPR head->data_0 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, len=5] [L602] EXPR head->data_1 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR head->data_2 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] reach_error() VAL [head={-5:0}, len=5] - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 104.6s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2859 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2859 mSDsluCounter, 2747 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 949 IncrementalHoareTripleChecker+Unchecked, 2338 mSDsCounter, 217 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2123 IncrementalHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 217 mSolverCounterUnsat, 580 mSDtfsCounter, 2123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1183 GetRequests, 843 SyntacticMatches, 38 SemanticMatches, 302 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 79.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=11, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 379 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 66.7s InterpolantComputationTime, 921 NumberOfCodeBlocks, 894 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1152 ConstructedInterpolants, 99 QuantifiedInterpolants, 6386 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2281 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 1277/1608 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 02:58:11,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebb331f-4b84-4f79-95ce-9ceb919ead25/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)