./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:52:30,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:52:30,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:52:30,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:52:30,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:52:30,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:52:30,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:52:30,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:52:30,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:52:30,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:52:30,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:52:30,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:52:30,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:52:30,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:52:30,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:52:30,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:52:30,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:52:30,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:52:30,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:52:30,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:52:30,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:52:30,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:52:30,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:52:30,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:52:30,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:52:30,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:52:30,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:52:30,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:52:30,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:52:30,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:52:30,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:52:30,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:52:30,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:52:30,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:52:30,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:52:30,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:52:30,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:52:30,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:52:30,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:52:30,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:52:30,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:52:30,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:52:30,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:52:30,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:52:30,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:52:30,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:52:30,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:52:30,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:52:30,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:52:30,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:52:30,444 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:52:30,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:52:30,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:52:30,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:52:30,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:52:30,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:52:30,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:52:30,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:52:30,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:52:30,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:52:30,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:52:30,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:52:30,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:52:30,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:52:30,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:52:30,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:52:30,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:52:30,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:52:30,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:52:30,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:52:30,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:52:30,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:52:30,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:52:30,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:52:30,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:52:30,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:52:30,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c [2021-12-06 20:52:30,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:52:30,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:52:30,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:52:30,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:52:30,660 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:52:30,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/forester-heap/dll-circular-2.i [2021-12-06 20:52:30,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/data/16d89497d/28475aa7452645c2acc6c8dc8ab44094/FLAGca4af5f71 [2021-12-06 20:52:31,126 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:52:31,127 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/sv-benchmarks/c/forester-heap/dll-circular-2.i [2021-12-06 20:52:31,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/data/16d89497d/28475aa7452645c2acc6c8dc8ab44094/FLAGca4af5f71 [2021-12-06 20:52:31,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/data/16d89497d/28475aa7452645c2acc6c8dc8ab44094 [2021-12-06 20:52:31,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:52:31,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:52:31,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:52:31,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:52:31,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:52:31,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b0805d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31, skipping insertion in model container [2021-12-06 20:52:31,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:52:31,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:52:31,391 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_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/sv-benchmarks/c/forester-heap/dll-circular-2.i[22391,22404] [2021-12-06 20:52:31,396 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_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/sv-benchmarks/c/forester-heap/dll-circular-2.i[22497,22510] [2021-12-06 20:52:31,398 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_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/sv-benchmarks/c/forester-heap/dll-circular-2.i[22622,22635] [2021-12-06 20:52:31,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:52:31,409 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:52:31,440 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_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/sv-benchmarks/c/forester-heap/dll-circular-2.i[22391,22404] [2021-12-06 20:52:31,441 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_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/sv-benchmarks/c/forester-heap/dll-circular-2.i[22497,22510] [2021-12-06 20:52:31,443 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_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/sv-benchmarks/c/forester-heap/dll-circular-2.i[22622,22635] [2021-12-06 20:52:31,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:52:31,467 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:52:31,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31 WrapperNode [2021-12-06 20:52:31,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:52:31,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:52:31,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:52:31,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:52:31,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,505 INFO L137 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2021-12-06 20:52:31,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:52:31,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:52:31,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:52:31,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:52:31,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:52:31,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:52:31,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:52:31,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:52:31,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (1/1) ... [2021-12-06 20:52:31,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:52:31,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:52:31,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:52:31,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:52:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:52:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:52:31,668 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:52:31,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:52:31,832 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:52:31,837 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:52:31,837 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-06 20:52:31,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:52:31 BoogieIcfgContainer [2021-12-06 20:52:31,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:52:31,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:52:31,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:52:31,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:52:31,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:52:31" (1/3) ... [2021-12-06 20:52:31,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e850648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:52:31, skipping insertion in model container [2021-12-06 20:52:31,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:52:31" (2/3) ... [2021-12-06 20:52:31,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e850648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:52:31, skipping insertion in model container [2021-12-06 20:52:31,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:52:31" (3/3) ... [2021-12-06 20:52:31,844 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2021-12-06 20:52:31,848 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:52:31,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-06 20:52:31,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:52:31,895 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=PETRI_NET, 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 [2021-12-06 20:52:31,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-06 20:52:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 20:52:31,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:31,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 20:52:31,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:31,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:31,925 INFO L85 PathProgramCache]: Analyzing trace with hash 890892102, now seen corresponding path program 1 times [2021-12-06 20:52:31,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948641124] [2021-12-06 20:52:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:31,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:32,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948641124] [2021-12-06 20:52:32,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948641124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:52:32,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:52:32,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:52:32,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840510021] [2021-12-06 20:52:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:52:32,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:52:32,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:52:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:52:32,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:52:32,111 INFO L87 Difference]: Start difference. First operand has 33 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:52:32,124 INFO L93 Difference]: Finished difference Result 64 states and 100 transitions. [2021-12-06 20:52:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:52:32,126 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-06 20:52:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:52:32,132 INFO L225 Difference]: With dead ends: 64 [2021-12-06 20:52:32,132 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 20:52:32,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:52:32,137 INFO L933 BasicCegarLoop]: 39 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, 39 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 [2021-12-06 20:52:32,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:52:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 20:52:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 20:52:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-12-06 20:52:32,161 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 6 [2021-12-06 20:52:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:52:32,162 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-12-06 20:52:32,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-12-06 20:52:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 20:52:32,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:32,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:52:32,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:52:32,163 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:32,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:32,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1806883023, now seen corresponding path program 1 times [2021-12-06 20:52:32,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:32,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188190446] [2021-12-06 20:52:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:32,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:32,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:32,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188190446] [2021-12-06 20:52:32,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188190446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:52:32,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:52:32,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:52:32,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744596214] [2021-12-06 20:52:32,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:52:32,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:52:32,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:52:32,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:52:32,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:52:32,263 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:52:32,320 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2021-12-06 20:52:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:52:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-06 20:52:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:52:32,322 INFO L225 Difference]: With dead ends: 42 [2021-12-06 20:52:32,322 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 20:52:32,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:52:32,324 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:52:32,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 47 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:52:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 20:52:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-12-06 20:52:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-12-06 20:52:32,331 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 7 [2021-12-06 20:52:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:52:32,332 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-12-06 20:52:32,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-12-06 20:52:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:52:32,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:32,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:52:32,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:52:32,333 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:32,334 INFO L85 PathProgramCache]: Analyzing trace with hash 706691337, now seen corresponding path program 1 times [2021-12-06 20:52:32,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:32,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837672106] [2021-12-06 20:52:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:32,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:32,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:32,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837672106] [2021-12-06 20:52:32,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837672106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:52:32,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:52:32,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:52:32,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805681033] [2021-12-06 20:52:32,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:52:32,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:52:32,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:52:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:52:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:52:32,393 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:52:32,407 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2021-12-06 20:52:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:52:32,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 20:52:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:52:32,408 INFO L225 Difference]: With dead ends: 71 [2021-12-06 20:52:32,409 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 20:52:32,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:52:32,410 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:52:32,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 48 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:52:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 20:52:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2021-12-06 20:52:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 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) [2021-12-06 20:52:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-12-06 20:52:32,416 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 10 [2021-12-06 20:52:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:52:32,416 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-12-06 20:52:32,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-12-06 20:52:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:52:32,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:32,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:52:32,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:52:32,417 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash -84804677, now seen corresponding path program 1 times [2021-12-06 20:52:32,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:32,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014224634] [2021-12-06 20:52:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:32,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:32,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:32,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014224634] [2021-12-06 20:52:32,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014224634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:52:32,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:52:32,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:52:32,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177081061] [2021-12-06 20:52:32,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:52:32,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:52:32,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:52:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:52:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:52:32,449 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:52:32,460 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-12-06 20:52:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:52:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 20:52:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:52:32,461 INFO L225 Difference]: With dead ends: 38 [2021-12-06 20:52:32,461 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 20:52:32,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:52:32,462 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:52:32,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:52:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 20:52:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-06 20:52:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 35 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) [2021-12-06 20:52:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2021-12-06 20:52:32,467 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 13 [2021-12-06 20:52:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:52:32,467 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2021-12-06 20:52:32,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2021-12-06 20:52:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:52:32,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:32,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:52:32,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:52:32,468 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash -84802755, now seen corresponding path program 1 times [2021-12-06 20:52:32,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:32,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114895172] [2021-12-06 20:52:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:32,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:32,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114895172] [2021-12-06 20:52:32,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114895172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:52:32,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:52:32,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:52:32,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774148827] [2021-12-06 20:52:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:52:32,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:52:32,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:52:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:52:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:52:32,572 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:52:32,679 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2021-12-06 20:52:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:52:32,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 20:52:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:52:32,680 INFO L225 Difference]: With dead ends: 47 [2021-12-06 20:52:32,681 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 20:52:32,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:52:32,682 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:52:32,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 68 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:52:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 20:52:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-06 20:52:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-12-06 20:52:32,688 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 13 [2021-12-06 20:52:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:52:32,688 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-12-06 20:52:32,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-12-06 20:52:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:52:32,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:32,689 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:52:32,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:52:32,690 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:32,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1783178116, now seen corresponding path program 1 times [2021-12-06 20:52:32,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:32,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592853222] [2021-12-06 20:52:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:32,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:32,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:32,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592853222] [2021-12-06 20:52:32,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592853222] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:52:32,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538118250] [2021-12-06 20:52:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:32,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:52:32,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:52:32,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:52:32,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:52:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:32,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 20:52:32,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:52:32,909 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 [2021-12-06 20:52:32,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2021-12-06 20:52:32,983 INFO L354 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2021-12-06 20:52:32,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 53 [2021-12-06 20:52:32,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-12-06 20:52:32,997 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 20:52:32,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-06 20:52:33,040 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:52:33,041 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 30 treesize of output 28 [2021-12-06 20:52:33,095 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 47 treesize of output 27 [2021-12-06 20:52:33,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-06 20:52:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:33,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:52:33,124 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_322) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-12-06 20:52:33,170 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:52:33,170 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-12-06 20:52:33,180 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:52:33,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 225 [2021-12-06 20:52:33,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 196 [2021-12-06 20:52:33,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 184 [2021-12-06 20:52:33,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 180 [2021-12-06 20:52:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-06 20:52:33,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538118250] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:52:33,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:52:33,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-06 20:52:33,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695827745] [2021-12-06 20:52:33,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:52:33,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:52:33,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:52:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:52:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2021-12-06 20:52:33,370 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:52:33,433 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2021-12-06 20:52:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:52:33,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 20:52:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:52:33,434 INFO L225 Difference]: With dead ends: 61 [2021-12-06 20:52:33,434 INFO L226 Difference]: Without dead ends: 59 [2021-12-06 20:52:33,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2021-12-06 20:52:33,435 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:52:33,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 109 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2021-12-06 20:52:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-06 20:52:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2021-12-06 20:52:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-12-06 20:52:33,441 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 13 [2021-12-06 20:52:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:52:33,441 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-12-06 20:52:33,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-12-06 20:52:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 20:52:33,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:33,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:52:33,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:52:33,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:52:33,643 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1644077251, now seen corresponding path program 1 times [2021-12-06 20:52:33,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:33,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051350930] [2021-12-06 20:52:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:33,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:33,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:33,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051350930] [2021-12-06 20:52:33,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051350930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:52:33,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:52:33,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:52:33,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604436404] [2021-12-06 20:52:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:52:33,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:52:33,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:52:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:52:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:52:33,689 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-12-06 20:52:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:52:33,704 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2021-12-06 20:52:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:52:33,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 17 [2021-12-06 20:52:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:52:33,705 INFO L225 Difference]: With dead ends: 96 [2021-12-06 20:52:33,705 INFO L226 Difference]: Without dead ends: 73 [2021-12-06 20:52:33,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:52:33,707 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:52:33,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 70 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:52:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-06 20:52:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2021-12-06 20:52:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 55 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:52:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2021-12-06 20:52:33,714 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 17 [2021-12-06 20:52:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:52:33,714 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2021-12-06 20:52:33,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-12-06 20:52:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2021-12-06 20:52:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 20:52:33,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:52:33,716 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:52:33,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:52:33,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:52:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:52:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash 619754034, now seen corresponding path program 1 times [2021-12-06 20:52:33,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:52:33,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418916392] [2021-12-06 20:52:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:33,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:52:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:33,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:52:33,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418916392] [2021-12-06 20:52:33,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418916392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:52:33,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919558023] [2021-12-06 20:52:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:52:33,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:52:33,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:52:33,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:52:33,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30b05d0-a21d-40b0-a9fe-fdc38c25a739/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:52:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:52:33,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-06 20:52:33,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:52:33,958 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 [2021-12-06 20:52:33,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:52:34,047 INFO L354 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2021-12-06 20:52:34,047 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 102 [2021-12-06 20:52:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:52:34,062 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2021-12-06 20:52:34,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,099 INFO L354 Elim1Store]: treesize reduction 125, result has 11.3 percent of original size [2021-12-06 20:52:34,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 96 treesize of output 93 [2021-12-06 20:52:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2021-12-06 20:52:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:52:34,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2021-12-06 20:52:34,134 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 8 treesize of output 7 [2021-12-06 20:52:34,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:52:34,145 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 19 treesize of output 18 [2021-12-06 20:52:34,154 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 8 treesize of output 7 [2021-12-06 20:52:34,166 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:52:34,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 20:52:34,177 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 8 treesize of output 7 [2021-12-06 20:52:34,186 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 8 treesize of output 7 [2021-12-06 20:52:34,193 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 8 treesize of output 7 [2021-12-06 20:52:34,207 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:52:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,224 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 15 treesize of output 11 [2021-12-06 20:52:34,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 20:52:34,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,239 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 15 treesize of output 11 [2021-12-06 20:52:34,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 20:52:34,304 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 20:52:34,304 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 16 treesize of output 22 [2021-12-06 20:52:34,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 20:52:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:52:34,328 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 20:52:34,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 41 [2021-12-06 20:52:34,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-12-06 20:52:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:52:34,420 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 20:52:34,420 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 1 case distinctions, treesize of input 99 treesize of output 76 [2021-12-06 20:52:34,430 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-06 20:52:34,430 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2021-12-06 20:52:34,434 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 18 treesize of output 20 [2021-12-06 20:52:34,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:52:34,559 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-12-06 20:52:34,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 57 [2021-12-06 20:52:34,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:52:34,564 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2021-12-06 20:52:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:52:34,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:52:34,608 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_639 (Array Int Int)) (v_ArrVal_636 Int) (v_ArrVal_635 Int)) (= 0 (let ((.cse4 (+ 8 |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 v_ArrVal_636))) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 v_ArrVal_635)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_639) (select (select .cse0 .cse1) .cse2)) (+ (select (select .cse3 .cse1) .cse2) 8))))))) is different from false [2021-12-06 20:52:34,831 INFO L354 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2021-12-06 20:52:34,831 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 2303 treesize of output 1827 [2021-12-06 20:52:35,063 INFO L354 Elim1Store]: treesize reduction 27, result has 64.9 percent of original size [2021-12-06 20:52:35,063 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 6612 treesize of output 4633 [2021-12-06 20:52:39,256 INFO L354 Elim1Store]: treesize reduction 371, result has 64.4 percent of original size [2021-12-06 20:52:39,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 186750 treesize of output 168719 [2021-12-06 20:52:51,889 WARN L227 SmtUtils]: Spent 10.52s on a formula simplification. DAG size of input: 314 DAG size of output: 290 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 20:52:51,891 INFO L354 Elim1Store]: treesize reduction 180, result has 86.1 percent of original size [2021-12-06 20:52:51,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 66 case distinctions, treesize of input 4910520 treesize of output 4578998 [2021-12-06 20:53:17,323 WARN L227 SmtUtils]: Spent 25.39s on a formula simplification. DAG size of input: 16279 DAG size of output: 16279 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:54:24,369 WARN L227 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 16056 DAG size of output: 15841 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:54:25,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4336320 treesize of output 4206102 [2021-12-06 20:54:37,529 WARN L227 SmtUtils]: Spent 12.15s on a formula simplification that was a NOOP. DAG size: 15840 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:54:38,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4203380 treesize of output 3897668 [2021-12-06 20:54:51,156 WARN L227 SmtUtils]: Spent 12.21s on a formula simplification that was a NOOP. DAG size: 15839 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:54:58,654 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 185 DAG size of output: 161 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 20:54:58,655 INFO L354 Elim1Store]: treesize reduction 156, result has 79.3 percent of original size [2021-12-06 20:54:58,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 8197322 treesize of output 8015918 [2021-12-06 20:55:46,377 WARN L227 SmtUtils]: Spent 47.67s on a formula simplification. DAG size of input: 17448 DAG size of output: 17437 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:55:50,395 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:55:50,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 29983661 treesize of output 28954459