./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:18:00,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:18:00,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:18:00,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:18:00,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:18:00,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:18:00,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:18:00,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:18:00,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:18:00,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:18:00,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:18:00,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:18:00,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:18:00,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:18:00,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:18:00,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:18:00,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:18:00,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:18:00,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:18:00,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:18:00,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:18:00,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:18:00,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:18:00,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:18:00,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:18:00,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:18:00,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:18:00,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:18:00,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:18:00,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:18:00,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:18:00,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:18:00,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:18:00,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:18:00,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:18:00,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:18:00,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:18:00,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:18:00,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:18:00,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:18:00,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:18:00,223 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:18:00,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:18:00,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:18:00,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:18:00,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:18:00,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:18:00,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:18:00,285 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:18:00,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:18:00,285 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:18:00,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:18:00,287 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:18:00,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:18:00,287 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:18:00,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:18:00,288 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:18:00,288 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:18:00,288 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:18:00,289 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:18:00,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:18:00,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:18:00,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:18:00,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:18:00,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:18:00,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:18:00,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:18:00,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:18:00,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:18:00,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:18:00,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:18:00,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:18:00,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:18:00,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:18:00,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:00,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:18:00,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:18:00,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:18:00,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:18:00,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:18:00,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:18:00,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:18:00,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:18:00,297 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_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 [2021-11-21 01:18:00,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:18:00,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:18:00,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:18:00,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:18:00,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:18:00,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-21 01:18:00,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/e672c44f6/095265a5a0714ea1a8a6a8bc90eee658/FLAGd04b454ce [2021-11-21 01:18:01,234 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:18:01,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-21 01:18:01,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/e672c44f6/095265a5a0714ea1a8a6a8bc90eee658/FLAGd04b454ce [2021-11-21 01:18:01,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/e672c44f6/095265a5a0714ea1a8a6a8bc90eee658 [2021-11-21 01:18:01,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:18:01,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:18:01,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:01,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:18:01,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:18:01,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:01" (1/1) ... [2021-11-21 01:18:01,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fee565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:01, skipping insertion in model container [2021-11-21 01:18:01,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:01" (1/1) ... [2021-11-21 01:18:01,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:18:01,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:18:01,972 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_41efd769-93dd-427c-8b21-3af60b41a6e8/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-21 01:18:01,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:01,994 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:18:02,069 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_41efd769-93dd-427c-8b21-3af60b41a6e8/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-21 01:18:02,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:02,108 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:18:02,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02 WrapperNode [2021-11-21 01:18:02,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:02,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:02,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:18:02,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:18:02,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,193 INFO L137 Inliner]: procedures = 127, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-11-21 01:18:02,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:02,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:18:02,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:18:02,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:18:02,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:18:02,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:18:02,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:18:02,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:18:02,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (1/1) ... [2021-11-21 01:18:02,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:02,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:02,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:18:02,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:18:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-21 01:18:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-21 01:18:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:18:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:18:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:18:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:18:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:18:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:18:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:18:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:18:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:18:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:18:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:18:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:18:02,493 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:18:02,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:18:02,541 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-21 01:18:02,828 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:18:02,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:18:02,971 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:18:02,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:02 BoogieIcfgContainer [2021-11-21 01:18:02,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:18:02,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:18:02,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:18:02,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:18:02,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:18:01" (1/3) ... [2021-11-21 01:18:02,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245a361b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:02, skipping insertion in model container [2021-11-21 01:18:02,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:02" (2/3) ... [2021-11-21 01:18:02,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245a361b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:02, skipping insertion in model container [2021-11-21 01:18:02,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:02" (3/3) ... [2021-11-21 01:18:02,984 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2021-11-21 01:18:02,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:18:02,995 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:18:03,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:18:03,049 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:18:03,050 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:18:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:18:03,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:03,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:03,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash -849827724, now seen corresponding path program 1 times [2021-11-21 01:18:03,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:03,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224901242] [2021-11-21 01:18:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:03,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:03,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:03,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224901242] [2021-11-21 01:18:03,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224901242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:03,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:03,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:18:03,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572876158] [2021-11-21 01:18:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:03,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:18:03,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:18:03,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:18:03,315 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:03,983 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2021-11-21 01:18:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:18:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:18:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:03,992 INFO L225 Difference]: With dead ends: 43 [2021-11-21 01:18:03,993 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 01:18:03,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:18:03,998 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:04,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:18:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 01:18:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-11-21 01:18:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-11-21 01:18:04,061 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 8 [2021-11-21 01:18:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:04,062 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-21 01:18:04,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2021-11-21 01:18:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:18:04,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:04,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:04,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:18:04,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash 166856345, now seen corresponding path program 1 times [2021-11-21 01:18:04,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:04,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408534093] [2021-11-21 01:18:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:04,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:04,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:04,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408534093] [2021-11-21 01:18:04,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408534093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:18:04,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685426565] [2021-11-21 01:18:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:04,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:04,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:04,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:18:04,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:18:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:04,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:18:04,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:04,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:04,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685426565] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:18:04,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1743319257] [2021-11-21 01:18:04,522 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 01:18:04,522 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:18:04,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:18:04,532 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:18:04,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:18:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:04,717 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:18:04,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:18:04,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:04,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:18:04,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:04,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:04,976 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-21 01:18:04,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:18:05,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,078 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:18:05,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 01:18:05,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-21 01:18:05,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,459 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 56 treesize of output 47 [2021-11-21 01:18:05,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:18:05,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:05,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-21 01:18:05,893 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-21 01:18:05,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 262 treesize of output 271 [2021-11-21 01:18:06,008 INFO L354 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2021-11-21 01:18:06,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 268 treesize of output 284 [2021-11-21 01:18:07,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,758 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-21 01:18:07,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 418 treesize of output 404 [2021-11-21 01:18:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,789 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:18:07,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 403 treesize of output 388 [2021-11-21 01:18:07,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,816 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:07,817 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 1 case distinctions, treesize of input 384 treesize of output 375 [2021-11-21 01:18:07,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,858 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:07,858 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 1 case distinctions, treesize of input 369 treesize of output 360 [2021-11-21 01:18:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:07,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:07,971 INFO L354 Elim1Store]: treesize reduction 187, result has 17.6 percent of original size [2021-11-21 01:18:07,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 354 treesize of output 357 [2021-11-21 01:18:07,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:07,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:08,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:08,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:08,063 INFO L354 Elim1Store]: treesize reduction 301, result has 16.2 percent of original size [2021-11-21 01:18:08,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 472 treesize of output 475 [2021-11-21 01:18:08,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:08,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 29 [2021-11-21 01:18:08,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:08,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:08,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:08,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:08,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 47 [2021-11-21 01:18:09,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:09,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:09,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:09,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-21 01:18:09,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:09,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:09,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:09,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:09,941 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:18:09,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 173 treesize of output 86 [2021-11-21 01:18:10,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:10,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:10,423 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:18:10,424 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 1 case distinctions, treesize of input 87 treesize of output 40 [2021-11-21 01:18:10,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:10,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:18:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,293 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-21 01:18:11,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 229 [2021-11-21 01:18:11,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,370 INFO L354 Elim1Store]: treesize reduction 128, result has 19.0 percent of original size [2021-11-21 01:18:11,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 265 treesize of output 264 [2021-11-21 01:18:11,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 281 [2021-11-21 01:18:11,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:18:11,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 23 [2021-11-21 01:18:11,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:11,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 33 [2021-11-21 01:18:12,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 67 [2021-11-21 01:18:12,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 56 [2021-11-21 01:18:12,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:18:12,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:12,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:12,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:13,006 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-21 01:18:13,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:18:13,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-21 01:18:13,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:13,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:13,205 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-21 01:18:13,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:18:13,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:18:13,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:13,668 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:18:14,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1743319257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:14,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:18:14,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 8 [2021-11-21 01:18:14,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771887793] [2021-11-21 01:18:14,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:14,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:18:14,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:18:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:18:14,153 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:14,591 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2021-11-21 01:18:14,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:18:14,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:18:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:14,592 INFO L225 Difference]: With dead ends: 25 [2021-11-21 01:18:14,592 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 01:18:14,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:18:14,593 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:14,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:18:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 01:18:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-21 01:18:14,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:14,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2021-11-21 01:18:14,599 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 11 [2021-11-21 01:18:14,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:14,600 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-11-21 01:18:14,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:14,600 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2021-11-21 01:18:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:18:14,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:14,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:14,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:14,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:14,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:14,802 INFO L85 PathProgramCache]: Analyzing trace with hash 778311555, now seen corresponding path program 1 times [2021-11-21 01:18:14,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:14,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704665766] [2021-11-21 01:18:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:14,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:18:14,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:14,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704665766] [2021-11-21 01:18:14,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704665766] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:18:14,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444556455] [2021-11-21 01:18:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:14,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:14,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:14,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:18:14,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:18:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:14,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:18:14,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:18:15,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:18:15,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444556455] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:18:15,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2126326676] [2021-11-21 01:18:15,069 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 01:18:15,081 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:18:15,082 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:18:15,086 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:18:15,087 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:18:15,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,148 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:18:15,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:18:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,199 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:18:15,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:18:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,316 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:18:15,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 01:18:15,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:18:15,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-21 01:18:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-21 01:18:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,686 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 56 treesize of output 47 [2021-11-21 01:18:15,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:15,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:18:15,903 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-21 01:18:15,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 262 treesize of output 271 [2021-11-21 01:18:15,991 INFO L354 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2021-11-21 01:18:15,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 268 treesize of output 284 [2021-11-21 01:18:17,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,275 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-21 01:18:17,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 418 treesize of output 404 [2021-11-21 01:18:17,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,296 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:18:17,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 403 treesize of output 388 [2021-11-21 01:18:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,328 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:17,329 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 1 case distinctions, treesize of input 384 treesize of output 375 [2021-11-21 01:18:17,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:17,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:17,426 INFO L354 Elim1Store]: treesize reduction 187, result has 17.6 percent of original size [2021-11-21 01:18:17,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 369 treesize of output 372 [2021-11-21 01:18:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,463 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:17,463 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 1 case distinctions, treesize of input 415 treesize of output 406 [2021-11-21 01:18:17,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:17,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:17,549 INFO L354 Elim1Store]: treesize reduction 247, result has 13.9 percent of original size [2021-11-21 01:18:17,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 400 treesize of output 403 [2021-11-21 01:18:17,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:17,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 29 [2021-11-21 01:18:17,835 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:18:18,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 47 [2021-11-21 01:18:18,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:18,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-21 01:18:19,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:19,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:19,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:19,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:19,301 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:18:19,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 29 [2021-11-21 01:18:19,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:19,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:19,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 68 [2021-11-21 01:18:20,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:18:20,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:20,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,543 INFO L354 Elim1Store]: treesize reduction 92, result has 24.6 percent of original size [2021-11-21 01:18:20,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 233 [2021-11-21 01:18:20,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,610 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-11-21 01:18:20,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 275 treesize of output 264 [2021-11-21 01:18:20,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 281 [2021-11-21 01:18:20,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:18:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:20,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 01:18:21,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 01:18:21,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:21,182 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:18:21,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 44 [2021-11-21 01:18:21,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,365 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:21,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 44 [2021-11-21 01:18:21,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:21,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 34 [2021-11-21 01:18:21,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:18:22,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:22,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-21 01:18:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:22,697 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-21 01:18:22,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:18:22,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:22,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:22,784 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-21 01:18:22,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:18:23,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:23,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:23,927 INFO L354 Elim1Store]: treesize reduction 72, result has 49.7 percent of original size [2021-11-21 01:18:23,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 405 treesize of output 409 [2021-11-21 01:18:23,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:24,039 INFO L354 Elim1Store]: treesize reduction 70, result has 32.0 percent of original size [2021-11-21 01:18:24,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 327 treesize of output 295 [2021-11-21 01:18:24,108 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 361 treesize of output 342 [2021-11-21 01:18:24,306 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 49 treesize of output 1 [2021-11-21 01:18:24,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:18:24,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:18:24,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:24,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:24,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:24,579 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:24,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 22 [2021-11-21 01:18:25,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:25,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:25,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:25,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:25,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 22 [2021-11-21 01:18:25,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:25,655 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:25,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-21 01:18:25,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:25,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:25,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 65 [2021-11-21 01:18:25,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:25,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:25,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 46 [2021-11-21 01:18:25,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:26,062 INFO L354 Elim1Store]: treesize reduction 214, result has 34.0 percent of original size [2021-11-21 01:18:26,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 283 treesize of output 310 [2021-11-21 01:18:26,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:26,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:26,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 85 [2021-11-21 01:18:26,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:26,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:26,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 34 [2021-11-21 01:18:26,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:26,843 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:26,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 65 [2021-11-21 01:18:27,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:27,055 INFO L354 Elim1Store]: treesize reduction 65, result has 30.9 percent of original size [2021-11-21 01:18:27,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 153 treesize of output 125 [2021-11-21 01:18:27,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:27,985 INFO L354 Elim1Store]: treesize reduction 227, result has 28.2 percent of original size [2021-11-21 01:18:27,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 340 treesize of output 340 [2021-11-21 01:18:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:28,209 INFO L354 Elim1Store]: treesize reduction 255, result has 19.3 percent of original size [2021-11-21 01:18:28,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 340 treesize of output 312 [2021-11-21 01:18:28,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:28,424 INFO L354 Elim1Store]: treesize reduction 68, result has 27.7 percent of original size [2021-11-21 01:18:28,425 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 1 case distinctions, treesize of input 299 treesize of output 290 [2021-11-21 01:18:28,533 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 [2021-11-21 01:18:28,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:28,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:28,873 INFO L354 Elim1Store]: treesize reduction 37, result has 35.1 percent of original size [2021-11-21 01:18:28,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 32 [2021-11-21 01:18:29,277 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:18:29,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:18:29,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:29,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:29,782 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:18:29,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 14 [2021-11-21 01:18:30,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:30,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:18:30,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:18:30,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:30,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:30,828 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 01:18:30,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:18:31,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:31,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:31,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:31,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-21 01:18:31,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:31,542 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2021-11-21 01:18:31,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 39 [2021-11-21 01:18:31,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:31,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:31,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-21 01:18:31,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:31,805 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2021-11-21 01:18:31,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 39 [2021-11-21 01:18:32,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,031 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:18:32,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 43 [2021-11-21 01:18:32,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,630 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-21 01:18:32,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 21 [2021-11-21 01:18:32,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:32,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-21 01:18:32,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,760 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2021-11-21 01:18:32,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 30 [2021-11-21 01:18:32,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,846 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 01:18:32,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 18 [2021-11-21 01:18:32,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:32,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:32,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-21 01:18:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:34,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:18:34,281 INFO L354 Elim1Store]: treesize reduction 36, result has 36.8 percent of original size [2021-11-21 01:18:34,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 49 [2021-11-21 01:18:38,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:18:38,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:38,483 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:18:40,166 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:18:40,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:18:40,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2021-11-21 01:18:40,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574165692] [2021-11-21 01:18:40,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:18:40,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:18:40,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:18:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:18:40,169 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:40,301 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2021-11-21 01:18:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:18:40,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:18:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:40,304 INFO L225 Difference]: With dead ends: 32 [2021-11-21 01:18:40,304 INFO L226 Difference]: Without dead ends: 20 [2021-11-21 01:18:40,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:18:40,305 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:40,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:18:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-21 01:18:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-21 01:18:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-11-21 01:18:40,312 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 12 [2021-11-21 01:18:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:40,312 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-11-21 01:18:40,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-11-21 01:18:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:18:40,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:40,313 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:40,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-21 01:18:40,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:40,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:40,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1524114648, now seen corresponding path program 2 times [2021-11-21 01:18:40,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:40,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686265180] [2021-11-21 01:18:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:40,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:41,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686265180] [2021-11-21 01:18:41,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686265180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:18:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330084531] [2021-11-21 01:18:41,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:18:41,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:41,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:41,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:18:41,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:18:42,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:18:42,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:18:42,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-21 01:18:42,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:42,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:42,841 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:18:42,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:18:42,997 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 01:18:42,998 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 1 case distinctions, treesize of input 131 treesize of output 119 [2021-11-21 01:18:43,021 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 01:18:43,022 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 1 case distinctions, treesize of input 119 treesize of output 107 [2021-11-21 01:18:43,028 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 136 treesize of output 125 [2021-11-21 01:18:43,046 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-21 01:18:43,046 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 1 case distinctions, treesize of input 126 treesize of output 93 [2021-11-21 01:18:43,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:43,239 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-21 01:18:43,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:18:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:43,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:43,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:43,573 INFO L354 Elim1Store]: treesize reduction 56, result has 28.2 percent of original size [2021-11-21 01:18:43,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 178 [2021-11-21 01:18:43,590 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 224 treesize of output 212 [2021-11-21 01:18:43,601 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 209 treesize of output 197 [2021-11-21 01:18:43,619 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-21 01:18:43,620 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 194 treesize of output 193 [2021-11-21 01:18:43,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:43,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:43,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:43,669 INFO L354 Elim1Store]: treesize reduction 116, result has 24.7 percent of original size [2021-11-21 01:18:43,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 183 treesize of output 188 [2021-11-21 01:18:45,394 INFO L354 Elim1Store]: treesize reduction 999, result has 8.1 percent of original size [2021-11-21 01:18:45,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 37 case distinctions, treesize of input 838 treesize of output 466 [2021-11-21 01:18:45,703 INFO L354 Elim1Store]: treesize reduction 1610, result has 7.3 percent of original size [2021-11-21 01:18:45,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 836 treesize of output 663 [2021-11-21 01:18:45,786 INFO L354 Elim1Store]: treesize reduction 138, result has 22.9 percent of original size [2021-11-21 01:18:45,787 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 2 case distinctions, treesize of input 772 treesize of output 705 [2021-11-21 01:18:45,813 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 677 treesize of output 653 [2021-11-21 01:18:45,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:45,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 19 [2021-11-21 01:18:45,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:45,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:45,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:45,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:45,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 123 [2021-11-21 01:18:45,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:45,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:46,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:46,007 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:18:46,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 93 [2021-11-21 01:18:46,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:46,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:46,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:46,065 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-11-21 01:18:46,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 213 treesize of output 121 [2021-11-21 01:18:46,178 INFO L354 Elim1Store]: treesize reduction 88, result has 12.9 percent of original size [2021-11-21 01:18:46,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 212 treesize of output 81 [2021-11-21 01:18:46,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 01:18:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:46,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:46,407 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-21 01:18:46,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1144355013] [2021-11-21 01:18:46,410 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 01:18:46,410 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:18:46,410 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:18:46,410 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:18:46,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:18:46,431 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@41b475ad at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:388) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 01:18:46,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:18:46,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-21 01:18:46,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898064891] [2021-11-21 01:18:46,447 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 01:18:46,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:18:46,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:18:46,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:18:46,451 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:18:46,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:18:46,456 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:46,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:18:46,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:46,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:46,677 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@41b475ad at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 01:18:46,679 INFO L158 Benchmark]: Toolchain (without parser) took 45140.19ms. Allocated memory was 92.3MB in the beginning and 352.3MB in the end (delta: 260.0MB). Free memory was 59.4MB in the beginning and 248.4MB in the end (delta: -189.0MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2021-11-21 01:18:46,679 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 48.0MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:18:46,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.74ms. Allocated memory is still 92.3MB. Free memory was 59.2MB in the beginning and 61.0MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:18:46,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.35ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 58.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:18:46,680 INFO L158 Benchmark]: Boogie Preprocessor took 50.41ms. Allocated memory is still 92.3MB. Free memory was 58.4MB in the beginning and 56.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:18:46,680 INFO L158 Benchmark]: RCFGBuilder took 727.55ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 75.9MB in the end (delta: -19.3MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-21 01:18:46,681 INFO L158 Benchmark]: TraceAbstraction took 43702.25ms. Allocated memory was 111.1MB in the beginning and 352.3MB in the end (delta: 241.2MB). Free memory was 75.4MB in the beginning and 248.4MB in the end (delta: -173.0MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2021-11-21 01:18:46,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 48.0MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.74ms. Allocated memory is still 92.3MB. Free memory was 59.2MB in the beginning and 61.0MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.35ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 58.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.41ms. Allocated memory is still 92.3MB. Free memory was 58.4MB in the beginning and 56.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 727.55ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 75.9MB in the end (delta: -19.3MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * TraceAbstraction took 43702.25ms. Allocated memory was 111.1MB in the beginning and 352.3MB in the end (delta: 241.2MB). Free memory was 75.4MB in the beginning and 248.4MB in the end (delta: -173.0MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@41b475ad de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@41b475ad: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 01:18:46,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:18:49,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:18:49,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:18:49,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:18:49,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:18:49,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:18:49,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:18:49,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:18:49,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:18:49,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:18:49,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:18:49,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:18:49,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:18:49,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:18:49,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:18:49,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:18:49,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:18:49,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:18:49,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:18:49,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:18:49,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:18:49,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:18:49,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:18:49,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:18:49,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:18:49,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:18:49,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:18:49,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:18:49,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:18:49,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:18:49,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:18:49,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:18:49,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:18:49,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:18:49,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:18:49,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:18:49,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:18:49,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:18:49,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:18:49,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:18:49,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:18:49,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:18:49,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:18:49,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:18:49,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:18:49,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:18:49,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:18:49,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:18:49,224 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:18:49,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:18:49,225 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:18:49,225 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:18:49,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:18:49,227 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:18:49,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:18:49,228 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:18:49,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:18:49,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:18:49,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:18:49,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:18:49,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:18:49,230 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:18:49,230 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:18:49,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:18:49,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:18:49,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:18:49,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:18:49,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:18:49,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:18:49,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:18:49,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:49,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:18:49,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:18:49,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:18:49,234 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:18:49,234 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:18:49,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:18:49,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:18:49,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:18:49,235 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 [2021-11-21 01:18:49,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:18:49,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:18:49,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:18:49,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:18:49,677 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:18:49,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-21 01:18:49,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/3c693ce48/4455442f54384e929c2228da2479164b/FLAG19fd9e515 [2021-11-21 01:18:50,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:18:50,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-21 01:18:50,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/3c693ce48/4455442f54384e929c2228da2479164b/FLAG19fd9e515 [2021-11-21 01:18:50,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/data/3c693ce48/4455442f54384e929c2228da2479164b [2021-11-21 01:18:50,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:18:50,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:18:50,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:50,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:18:50,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:18:50,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:50" (1/1) ... [2021-11-21 01:18:50,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee5a9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:50, skipping insertion in model container [2021-11-21 01:18:50,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:50" (1/1) ... [2021-11-21 01:18:50,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:18:50,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:18:51,119 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_41efd769-93dd-427c-8b21-3af60b41a6e8/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-21 01:18:51,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:51,143 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:18:51,231 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_41efd769-93dd-427c-8b21-3af60b41a6e8/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-21 01:18:51,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:51,278 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:18:51,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51 WrapperNode [2021-11-21 01:18:51,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:51,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:51,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:18:51,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:18:51,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,349 INFO L137 Inliner]: procedures = 130, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 166 [2021-11-21 01:18:51,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:51,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:18:51,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:18:51,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:18:51,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:18:51,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:18:51,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:18:51,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:18:51,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (1/1) ... [2021-11-21 01:18:51,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:51,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:18:51,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:18:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-21 01:18:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-21 01:18:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:18:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:18:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:18:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:18:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:18:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:18:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:18:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:18:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:18:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:18:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:18:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:18:51,617 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:18:51,619 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:18:51,659 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-21 01:18:52,108 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:18:52,115 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:18:52,115 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:18:52,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:52 BoogieIcfgContainer [2021-11-21 01:18:52,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:18:52,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:18:52,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:18:52,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:18:52,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:18:50" (1/3) ... [2021-11-21 01:18:52,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffe9ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:52, skipping insertion in model container [2021-11-21 01:18:52,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:51" (2/3) ... [2021-11-21 01:18:52,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffe9ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:52, skipping insertion in model container [2021-11-21 01:18:52,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:52" (3/3) ... [2021-11-21 01:18:52,127 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2021-11-21 01:18:52,133 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:18:52,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:18:52,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:18:52,194 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:18:52,195 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:18:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 32 states have (on average 1.65625) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:18:52,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:52,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:52,218 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -504255867, now seen corresponding path program 1 times [2021-11-21 01:18:52,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:52,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213865929] [2021-11-21 01:18:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:52,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:52,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:52,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:18:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:52,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:18:52,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:52,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:52,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:18:52,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213865929] [2021-11-21 01:18:52,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213865929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:52,519 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:52,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:18:52,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144361508] [2021-11-21 01:18:52,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:52,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:18:52,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:18:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:18:52,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:18:52,556 INFO L87 Difference]: Start difference. First operand has 36 states, 32 states have (on average 1.65625) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:52,576 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2021-11-21 01:18:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:18:52,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:18:52,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:52,585 INFO L225 Difference]: With dead ends: 64 [2021-11-21 01:18:52,586 INFO L226 Difference]: Without dead ends: 27 [2021-11-21 01:18:52,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:18:52,593 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:52,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:18:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-21 01:18:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-21 01:18:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-21 01:18:52,627 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 15 [2021-11-21 01:18:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:52,628 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-21 01:18:52,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:52,629 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-21 01:18:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:18:52,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:52,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:52,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:52,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:18:52,843 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash 775433970, now seen corresponding path program 1 times [2021-11-21 01:18:52,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:52,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730296711] [2021-11-21 01:18:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:52,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:52,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:52,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:52,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:18:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:52,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:18:52,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:53,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:53,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:18:53,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730296711] [2021-11-21 01:18:53,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730296711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:53,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:53,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:18:53,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270723297] [2021-11-21 01:18:53,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:53,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:18:53,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:18:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:18:53,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:18:53,154 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:53,189 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-11-21 01:18:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:18:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:18:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:53,199 INFO L225 Difference]: With dead ends: 53 [2021-11-21 01:18:53,199 INFO L226 Difference]: Without dead ends: 33 [2021-11-21 01:18:53,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:18:53,202 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:53,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 97 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:18:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-21 01:18:53,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-21 01:18:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-11-21 01:18:53,219 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 15 [2021-11-21 01:18:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:53,220 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-11-21 01:18:53,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2021-11-21 01:18:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 01:18:53,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:53,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:53,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:18:53,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:18:53,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:53,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1054331662, now seen corresponding path program 1 times [2021-11-21 01:18:53,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:53,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999887140] [2021-11-21 01:18:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:53,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:53,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:53,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:18:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:18:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:18:53,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:18:53,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:18:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999887140] [2021-11-21 01:18:53,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999887140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:53,816 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:53,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:18:53,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723372789] [2021-11-21 01:18:53,817 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:53,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:18:53,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:18:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:18:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:18:53,819 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:53,932 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-21 01:18:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:18:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-21 01:18:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:53,934 INFO L225 Difference]: With dead ends: 61 [2021-11-21 01:18:53,934 INFO L226 Difference]: Without dead ends: 34 [2021-11-21 01:18:53,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:18:53,936 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:53,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:18:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-21 01:18:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-11-21 01:18:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-11-21 01:18:53,942 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 25 [2021-11-21 01:18:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:53,943 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-11-21 01:18:53,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-11-21 01:18:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 01:18:53,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:53,945 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:53,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:54,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:18:54,159 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1871980112, now seen corresponding path program 1 times [2021-11-21 01:18:54,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901092334] [2021-11-21 01:18:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:54,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:54,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:54,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:54,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:18:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:54,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:18:54,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-21 01:18:54,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-21 01:18:55,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:18:55,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901092334] [2021-11-21 01:18:55,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901092334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:55,112 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:55,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:18:55,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51959544] [2021-11-21 01:18:55,113 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:55,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:18:55,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:18:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:18:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:18:55,115 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:55,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:55,170 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2021-11-21 01:18:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:18:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-21 01:18:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:55,172 INFO L225 Difference]: With dead ends: 48 [2021-11-21 01:18:55,172 INFO L226 Difference]: Without dead ends: 34 [2021-11-21 01:18:55,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:18:55,174 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:55,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:18:55,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-21 01:18:55,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-21 01:18:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-11-21 01:18:55,182 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 25 [2021-11-21 01:18:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:55,182 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-11-21 01:18:55,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-11-21 01:18:55,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:18:55,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:55,184 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:55,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:55,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:18:55,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1615339204, now seen corresponding path program 1 times [2021-11-21 01:18:55,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:55,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149487148] [2021-11-21 01:18:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:55,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:55,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:55,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:55,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:18:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:55,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-21 01:18:55,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:55,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:18:55,893 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:18:55,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-21 01:18:56,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:56,359 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:18:56,359 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 2 case distinctions, treesize of input 50 treesize of output 60 [2021-11-21 01:18:56,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:56,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-21 01:18:56,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:56,790 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 42 treesize of output 27 [2021-11-21 01:18:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:56,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:18:57,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:18:57,181 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 01:18:57,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 149 treesize of output 100 [2021-11-21 01:18:57,230 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-11-21 01:18:57,231 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 139 treesize of output 105 [2021-11-21 01:18:57,246 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 102 treesize of output 92 [2021-11-21 01:18:58,319 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-21 01:18:58,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 83 [2021-11-21 01:18:59,160 INFO L354 Elim1Store]: treesize reduction 223, result has 11.9 percent of original size [2021-11-21 01:18:59,161 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 3 case distinctions, treesize of input 200 treesize of output 207 [2021-11-21 01:18:59,613 INFO L354 Elim1Store]: treesize reduction 592, result has 7.6 percent of original size [2021-11-21 01:18:59,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 179 treesize of output 134 [2021-11-21 01:18:59,839 INFO L354 Elim1Store]: treesize reduction 434, result has 9.0 percent of original size [2021-11-21 01:18:59,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 172 treesize of output 171 [2021-11-21 01:19:08,300 WARN L227 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 234 DAG size of output: 49 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:19:08,302 INFO L354 Elim1Store]: treesize reduction 1126, result has 6.6 percent of original size [2021-11-21 01:19:08,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 391 treesize of output 290 [2021-11-21 01:19:12,081 INFO L354 Elim1Store]: treesize reduction 662, result has 8.9 percent of original size [2021-11-21 01:19:12,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 319 treesize of output 301 [2021-11-21 01:19:12,226 INFO L354 Elim1Store]: treesize reduction 164, result has 15.9 percent of original size [2021-11-21 01:19:12,227 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 2 case distinctions, treesize of input 315 treesize of output 270 [2021-11-21 01:19:12,283 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-21 01:19:12,283 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 248 treesize of output 232 [2021-11-21 01:19:15,044 INFO L354 Elim1Store]: treesize reduction 342, result has 13.9 percent of original size [2021-11-21 01:19:15,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 469 treesize of output 219 [2021-11-21 01:19:16,074 INFO L354 Elim1Store]: treesize reduction 490, result has 13.7 percent of original size [2021-11-21 01:19:16,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 397 treesize of output 334 [2021-11-21 01:19:16,132 INFO L354 Elim1Store]: treesize reduction 83, result has 11.7 percent of original size [2021-11-21 01:19:16,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 454 treesize of output 400 [2021-11-21 01:19:17,158 INFO L354 Elim1Store]: treesize reduction 164, result has 0.6 percent of original size [2021-11-21 01:19:17,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 349 treesize of output 125 [2021-11-21 01:19:17,203 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-11-21 01:19:17,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 60 [2021-11-21 01:19:17,445 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 31 treesize of output 23 [2021-11-21 01:19:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:19:17,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:20:03,457 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_dll_insert_~last~0#1.offset_18| (_ BitVec 32))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse13 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (let ((.cse10 (select |c_#memory_$Pointer$.base| .cse6)) (.cse7 (bvadd (_ bv4 32) .cse13))) (let ((.cse1 (select .cse10 .cse7)) (.cse2 (bvadd (_ bv8 32) |v_ULTIMATE.start_dll_insert_~last~0#1.offset_18|)) (.cse4 (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_int| .cse6 (store (select |c_#memory_int| .cse6) .cse7 v_DerPreprocessor_7)))) (store .cse3 |c_ULTIMATE.start_node_create_#res#1.base| (store (store (select .cse3 |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 v_DerPreprocessor_6) .cse5 v_DerPreprocessor_5))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_4))) (select (select (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.base| .cse6 (store .cse10 .cse7 |c_ULTIMATE.start_node_create_#res#1.base|)))) (store .cse9 |c_ULTIMATE.start_node_create_#res#1.base| (store (store (select .cse9 |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 .cse6) .cse5 .cse1))))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 |c_ULTIMATE.start_node_create_#res#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse11 (let ((.cse12 (store |c_#memory_$Pointer$.offset| .cse6 (store (select |c_#memory_$Pointer$.offset| .cse6) .cse7 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|)))) (store .cse12 |c_ULTIMATE.start_node_create_#res#1.base| (store (store (select .cse12 |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 .cse13) .cse5 |v_ULTIMATE.start_dll_insert_~last~0#1.offset_18|))))) (store .cse11 .cse1 (store (select .cse11 .cse1) .cse2 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false [2021-11-21 01:20:05,854 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_node_create_~data#1| (_ BitVec 32)) (|v_ULTIMATE.start_dll_insert_~last~0#1.offset_18| (_ BitVec 32)) (|ULTIMATE.start_node_create_~temp~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~new_node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse9 (bvadd (_ bv4 32) |ULTIMATE.start_node_create_~temp~0#1.offset|)) (.cse10 (bvadd (_ bv8 32) |ULTIMATE.start_node_create_~temp~0#1.offset|))) (let ((.cse13 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10))) (.cse18 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11)))) (let ((.cse17 (select (select .cse18 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (.cse7 (select (select .cse13 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (let ((.cse14 (select .cse13 .cse7)) (.cse8 (bvadd (_ bv4 32) .cse17))) (let ((.cse1 (select .cse14 .cse8)) (.cse2 (bvadd (_ bv8 32) |v_ULTIMATE.start_dll_insert_~last~0#1.offset_18|)) (.cse4 (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 v_DerPreprocessor_9) .cse10 v_DerPreprocessor_8) |ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|)))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 v_DerPreprocessor_7))))) (store .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 v_DerPreprocessor_6) .cse5 v_DerPreprocessor_5))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_4))) (select (select (let ((.cse11 (let ((.cse12 (store .cse13 .cse7 (store .cse14 .cse8 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 .cse7) .cse5 .cse1))))) (store .cse11 .cse1 (store (select .cse11 .cse1) .cse2 |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse15 (let ((.cse16 (store .cse18 .cse7 (store (select .cse18 .cse7) .cse8 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|)))) (store .cse16 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse16 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 .cse17) .cse5 |v_ULTIMATE.start_dll_insert_~last~0#1.offset_18|))))) (store .cse15 .cse1 (store (select .cse15 .cse1) .cse2 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))))) is different from false [2021-11-21 01:21:46,655 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 8705636699 treesize of output 8690397303 [2021-11-21 01:30:27,581 WARN L227 SmtUtils]: Spent 8.68m on a formula simplification that was a NOOP. DAG size: 1783 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:30:29,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149487148] [2021-11-21 01:30:29,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:30:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1308890503] [2021-11-21 01:30:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:29,488 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:29,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:30:29,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:30:29,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41efd769-93dd-427c-8b21-3af60b41a6e8/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-21 01:30:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:29,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-21 01:30:29,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:30,648 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 [2021-11-21 01:30:33,532 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:30:33,533 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 22 treesize of output 29 [2021-11-21 01:30:35,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 27 [2021-11-21 01:30:35,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:30:35,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,908 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 18 treesize of output 19 [2021-11-21 01:30:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:37,332 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 01:30:37,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 78 [2021-11-21 01:30:37,375 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-11-21 01:30:37,376 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 105 treesize of output 71 [2021-11-21 01:30:40,275 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-21 01:30:40,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 42 [2021-11-21 01:30:41,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:42,068 INFO L354 Elim1Store]: treesize reduction 213, result has 12.7 percent of original size [2021-11-21 01:30:42,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 129 [2021-11-21 01:30:42,081 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 159 treesize of output 147 [2021-11-21 01:30:42,095 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 144 treesize of output 132 [2021-11-21 01:30:42,135 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-21 01:30:42,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 128 [2021-11-21 01:30:42,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:42,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:42,292 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-21 01:30:42,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-21 01:30:50,076 INFO L354 Elim1Store]: treesize reduction 962, result has 7.6 percent of original size [2021-11-21 01:30:50,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 382 treesize of output 289 [2021-11-21 01:30:50,607 INFO L354 Elim1Store]: treesize reduction 473, result has 9.9 percent of original size [2021-11-21 01:30:50,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 352 treesize of output 303 [2021-11-21 01:30:50,756 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-11-21 01:30:50,757 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 2 case distinctions, treesize of input 325 treesize of output 274 [2021-11-21 01:30:50,818 INFO L354 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2021-11-21 01:30:50,819 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 250 treesize of output 234 [2021-11-21 01:30:53,826 INFO L354 Elim1Store]: treesize reduction 690, result has 10.5 percent of original size [2021-11-21 01:30:53,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 359 treesize of output 287 [2021-11-21 01:30:54,086 INFO L354 Elim1Store]: treesize reduction 420, result has 11.2 percent of original size [2021-11-21 01:30:54,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 359 treesize of output 325 [2021-11-21 01:30:54,131 INFO L354 Elim1Store]: treesize reduction 89, result has 12.7 percent of original size [2021-11-21 01:30:54,131 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 349 treesize of output 303