./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/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_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fb6aa6206205a747f158782e93b3c9333c1a2cdc4e8dab70046fca960e31961 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:53:54,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:53:54,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:53:54,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:53:54,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:53:54,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:53:54,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:53:54,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:53:54,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:53:54,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:53:54,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:53:54,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:53:54,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:53:54,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:53:54,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:53:54,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:53:54,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:53:54,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:53:54,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:53:54,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:53:54,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:53:54,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:53:54,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:53:54,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:53:54,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:53:54,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:53:54,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:53:54,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:53:54,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:53:54,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:53:54,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:53:54,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:53:54,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:53:54,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:53:54,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:53:54,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:53:54,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:53:54,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:53:54,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:53:54,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:53:54,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:53:54,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 19:53:54,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:53:54,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:53:54,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:53:54,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:53:54,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:53:54,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:53:54,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:53:54,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:53:54,492 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:53:54,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:53:54,492 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:53:54,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:53:54,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:53:54,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:53:54,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:53:54,493 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:53:54,494 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:53:54,494 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 19:53:54,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:53:54,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:53:54,494 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:53:54,495 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:53:54,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:53:54,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:53:54,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:53:54,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:53:54,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:53:54,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:53:54,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:53:54,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:53:54,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:53:54,497 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_6eead427-1e15-45cd-a1cf-c152db817765/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb6aa6206205a747f158782e93b3c9333c1a2cdc4e8dab70046fca960e31961 [2021-12-06 19:53:54,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:53:54,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:53:54,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:53:54,710 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:53:54,710 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:53:54,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2021-12-06 19:53:54,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/data/8b22d6135/ea256331e0bf4c8b9c4644dd05e7220c/FLAG04157b042 [2021-12-06 19:53:55,162 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:53:55,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2021-12-06 19:53:55,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/data/8b22d6135/ea256331e0bf4c8b9c4644dd05e7220c/FLAG04157b042 [2021-12-06 19:53:55,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/data/8b22d6135/ea256331e0bf4c8b9c4644dd05e7220c [2021-12-06 19:53:55,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:53:55,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:53:55,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:53:55,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:53:55,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:53:55,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530f5030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55, skipping insertion in model container [2021-12-06 19:53:55,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:53:55,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:53:55,441 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_6eead427-1e15-45cd-a1cf-c152db817765/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2021-12-06 19:53:55,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:53:55,449 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:53:55,479 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_6eead427-1e15-45cd-a1cf-c152db817765/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2021-12-06 19:53:55,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:53:55,501 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:53:55,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55 WrapperNode [2021-12-06 19:53:55,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:53:55,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:53:55,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:53:55,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:53:55,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,534 INFO L137 Inliner]: procedures = 122, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2021-12-06 19:53:55,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:53:55,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:53:55,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:53:55,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:53:55,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:53:55,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:53:55,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:53:55,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:53:55,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (1/1) ... [2021-12-06 19:53:55,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:53:55,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:53:55,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:53:55,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:53:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-06 19:53:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-06 19:53:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:53:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:53:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:53:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:53:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:53:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:53:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:53:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:53:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:53:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:53:55,705 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:53:55,707 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:53:55,729 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-06 19:53:55,937 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:53:55,951 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:53:55,951 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 19:53:55,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:53:55 BoogieIcfgContainer [2021-12-06 19:53:55,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:53:55,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:53:55,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:53:55,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:53:55,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:53:55" (1/3) ... [2021-12-06 19:53:55,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da863a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:53:55, skipping insertion in model container [2021-12-06 19:53:55,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:53:55" (2/3) ... [2021-12-06 19:53:55,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da863a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:53:55, skipping insertion in model container [2021-12-06 19:53:55,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:53:55" (3/3) ... [2021-12-06 19:53:55,962 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2021-12-06 19:53:55,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:53:55,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-12-06 19:53:56,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:53:56,022 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:53:56,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-12-06 19:53:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 78 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 19:53:56,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 19:53:56,040 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1079622, now seen corresponding path program 1 times [2021-12-06 19:53:56,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174201966] [2021-12-06 19:53:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:56,164 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 19:53:56,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:56,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174201966] [2021-12-06 19:53:56,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174201966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:56,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:56,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:53:56,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623650507] [2021-12-06 19:53:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:56,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:53:56,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:53:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,194 INFO L87 Difference]: Start difference. First operand has 80 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 78 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:56,263 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2021-12-06 19:53:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:53:56,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-06 19:53:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:56,270 INFO L225 Difference]: With dead ends: 93 [2021-12-06 19:53:56,270 INFO L226 Difference]: Without dead ends: 87 [2021-12-06 19:53:56,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,274 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:56,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 62 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-06 19:53:56,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70. [2021-12-06 19:53:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-12-06 19:53:56,300 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 4 [2021-12-06 19:53:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:56,300 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-12-06 19:53:56,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-12-06 19:53:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 19:53:56,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 19:53:56,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:53:56,301 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1079623, now seen corresponding path program 1 times [2021-12-06 19:53:56,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801521633] [2021-12-06 19:53:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:56,338 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 19:53:56,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:56,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801521633] [2021-12-06 19:53:56,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801521633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:56,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:56,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:53:56,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908022841] [2021-12-06 19:53:56,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:56,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:53:56,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:53:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,340 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:56,378 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-12-06 19:53:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:53:56,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-06 19:53:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:56,379 INFO L225 Difference]: With dead ends: 66 [2021-12-06 19:53:56,379 INFO L226 Difference]: Without dead ends: 66 [2021-12-06 19:53:56,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,381 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:56,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-06 19:53:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-12-06 19:53:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-12-06 19:53:56,387 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 4 [2021-12-06 19:53:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:56,387 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-12-06 19:53:56,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-12-06 19:53:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:53:56,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:56,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:53:56,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash -401980428, now seen corresponding path program 1 times [2021-12-06 19:53:56,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525438966] [2021-12-06 19:53:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:56,430 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 19:53:56,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:56,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525438966] [2021-12-06 19:53:56,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525438966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:56,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:56,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:53:56,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51686104] [2021-12-06 19:53:56,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:56,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:53:56,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:53:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,432 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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 19:53:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:56,485 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2021-12-06 19:53:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:53:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 19:53:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:56,486 INFO L225 Difference]: With dead ends: 108 [2021-12-06 19:53:56,486 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 19:53:56,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,492 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 53 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:56,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 118 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 19:53:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2021-12-06 19:53:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-12-06 19:53:56,498 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 10 [2021-12-06 19:53:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:56,498 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-12-06 19:53:56,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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 19:53:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-12-06 19:53:56,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:53:56,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:56,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:53:56,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -401980427, now seen corresponding path program 1 times [2021-12-06 19:53:56,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959311807] [2021-12-06 19:53:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:56,543 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 19:53:56,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959311807] [2021-12-06 19:53:56,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959311807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:56,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:56,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:53:56,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755763460] [2021-12-06 19:53:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:56,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:53:56,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:53:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,545 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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 19:53:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:56,595 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-12-06 19:53:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:53:56,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 19:53:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:56,597 INFO L225 Difference]: With dead ends: 110 [2021-12-06 19:53:56,597 INFO L226 Difference]: Without dead ends: 110 [2021-12-06 19:53:56,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,599 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 56 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:56,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 127 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-06 19:53:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 62. [2021-12-06 19:53:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 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 19:53:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-12-06 19:53:56,606 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 10 [2021-12-06 19:53:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:56,606 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-12-06 19:53:56,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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 19:53:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-12-06 19:53:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:53:56,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:56,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:53:56,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash -401981869, now seen corresponding path program 1 times [2021-12-06 19:53:56,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600608887] [2021-12-06 19:53:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:56,664 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 19:53:56,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:56,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600608887] [2021-12-06 19:53:56,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600608887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:56,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:56,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:53:56,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442355507] [2021-12-06 19:53:56,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:56,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:53:56,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:53:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:53:56,666 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 19:53:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:56,718 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-12-06 19:53:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:53:56,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 19:53:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:56,719 INFO L225 Difference]: With dead ends: 88 [2021-12-06 19:53:56,719 INFO L226 Difference]: Without dead ends: 88 [2021-12-06 19:53:56,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:53:56,721 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 159 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:56,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 63 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-06 19:53:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2021-12-06 19:53:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 68 states have internal predecessors, (75), 0 states have call successors, (0), 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 19:53:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2021-12-06 19:53:56,727 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 10 [2021-12-06 19:53:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:56,728 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2021-12-06 19:53:56,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 19:53:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2021-12-06 19:53:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:53:56,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:56,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:53:56,729 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash -401981868, now seen corresponding path program 1 times [2021-12-06 19:53:56,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698866369] [2021-12-06 19:53:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:56,770 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 19:53:56,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:56,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698866369] [2021-12-06 19:53:56,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698866369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:56,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:56,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:53:56,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690368430] [2021-12-06 19:53:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:56,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:53:56,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:53:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:53:56,772 INFO L87 Difference]: Start difference. First operand 69 states and 75 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 19:53:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:56,777 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2021-12-06 19:53:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:53:56,777 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 19:53:56,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:56,778 INFO L225 Difference]: With dead ends: 69 [2021-12-06 19:53:56,778 INFO L226 Difference]: Without dead ends: 69 [2021-12-06 19:53:56,778 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 19:53:56,779 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:56,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 119 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-06 19:53:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-12-06 19:53:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-12-06 19:53:56,783 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 10 [2021-12-06 19:53:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:56,783 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-12-06 19:53:56,783 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 19:53:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-12-06 19:53:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:53:56,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:56,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:53:56,784 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash 243865784, now seen corresponding path program 1 times [2021-12-06 19:53:56,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502400737] [2021-12-06 19:53:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:56,868 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 19:53:56,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:56,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502400737] [2021-12-06 19:53:56,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502400737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:56,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:56,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:53:56,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767316893] [2021-12-06 19:53:56,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:56,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:53:56,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:53:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:53:56,870 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:56,959 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2021-12-06 19:53:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:53:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:53:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:56,961 INFO L225 Difference]: With dead ends: 85 [2021-12-06 19:53:56,961 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 19:53:56,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:53:56,962 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 145 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:56,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 84 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:53:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 19:53:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2021-12-06 19:53:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 66 states have internal predecessors, (70), 0 states have call successors, (0), 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 19:53:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-12-06 19:53:56,968 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 12 [2021-12-06 19:53:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:56,968 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-12-06 19:53:56,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-12-06 19:53:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:53:56,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:56,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:56,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:53:56,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash -27720857, now seen corresponding path program 1 times [2021-12-06 19:53:56,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:56,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622529624] [2021-12-06 19:53:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:56,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:53:57,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:57,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622529624] [2021-12-06 19:53:57,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622529624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:57,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:57,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:53:57,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358617890] [2021-12-06 19:53:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:57,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:53:57,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:57,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:53:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:53:57,020 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:57,070 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2021-12-06 19:53:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:53:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 19:53:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:57,072 INFO L225 Difference]: With dead ends: 82 [2021-12-06 19:53:57,072 INFO L226 Difference]: Without dead ends: 82 [2021-12-06 19:53:57,072 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 19:53:57,073 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 92 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:57,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 68 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-06 19:53:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-12-06 19:53:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 64 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 19:53:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-12-06 19:53:57,078 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 16 [2021-12-06 19:53:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:57,079 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-12-06 19:53:57,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-12-06 19:53:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:53:57,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:57,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:57,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:53:57,080 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:57,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -27720856, now seen corresponding path program 1 times [2021-12-06 19:53:57,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:57,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12521199] [2021-12-06 19:53:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:57,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:53:57,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:57,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12521199] [2021-12-06 19:53:57,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12521199] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:53:57,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888995799] [2021-12-06 19:53:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:57,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:57,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:53:57,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:53:57,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:53:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:57,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:53:57,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:53:57,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:53:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:53:57,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888995799] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:53:57,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:53:57,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-06 19:53:57,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902132958] [2021-12-06 19:53:57,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:53:57,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:53:57,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:53:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:53:57,273 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 19:53:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:57,288 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2021-12-06 19:53:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:53:57,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 16 [2021-12-06 19:53:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:57,289 INFO L225 Difference]: With dead ends: 81 [2021-12-06 19:53:57,289 INFO L226 Difference]: Without dead ends: 81 [2021-12-06 19:53:57,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:53:57,290 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:57,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 125 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:53:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-06 19:53:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-12-06 19:53:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 78 states have internal predecessors, (84), 0 states have call successors, (0), 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 19:53:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2021-12-06 19:53:57,296 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 16 [2021-12-06 19:53:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:57,296 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2021-12-06 19:53:57,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 19:53:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2021-12-06 19:53:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:53:57,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:57,297 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:57,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:53:57,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:57,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -868554548, now seen corresponding path program 1 times [2021-12-06 19:53:57,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56810662] [2021-12-06 19:53:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:57,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:53:57,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:57,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56810662] [2021-12-06 19:53:57,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56810662] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:53:57,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352664128] [2021-12-06 19:53:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:57,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:57,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:53:57,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:53:57,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:53:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:57,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 19:53:57,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:57,729 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 19:53:57,733 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 19:53:57,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:53:57,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 19:53:57,809 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:53:57,809 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 19:53:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:53:57,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:53:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:53:58,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352664128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:53:58,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:53:58,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2021-12-06 19:53:58,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108583112] [2021-12-06 19:53:58,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:53:58,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:53:58,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:58,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:53:58,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:53:58,047 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:58,164 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2021-12-06 19:53:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:53:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 19:53:58,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:58,165 INFO L225 Difference]: With dead ends: 94 [2021-12-06 19:53:58,166 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 19:53:58,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:53:58,166 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 176 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:58,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 84 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 53 Unchecked, 0.1s Time] [2021-12-06 19:53:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 19:53:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2021-12-06 19:53:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 76 states have internal predecessors, (80), 0 states have call successors, (0), 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 19:53:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2021-12-06 19:53:58,170 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 18 [2021-12-06 19:53:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:58,171 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2021-12-06 19:53:58,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2021-12-06 19:53:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 19:53:58,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:58,172 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:58,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:53:58,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:53:58,374 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:58,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:58,375 INFO L85 PathProgramCache]: Analyzing trace with hash 140768543, now seen corresponding path program 1 times [2021-12-06 19:53:58,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:58,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817540344] [2021-12-06 19:53:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:58,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 19:53:58,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817540344] [2021-12-06 19:53:58,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817540344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:58,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:58,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:53:58,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032187589] [2021-12-06 19:53:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:58,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:53:58,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:53:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:53:58,563 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:58,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:58,667 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2021-12-06 19:53:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:53:58,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 19:53:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:58,669 INFO L225 Difference]: With dead ends: 90 [2021-12-06 19:53:58,669 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 19:53:58,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:53:58,670 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 148 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:58,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 76 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:53:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 19:53:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 74. [2021-12-06 19:53:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-12-06 19:53:58,675 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 37 [2021-12-06 19:53:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:58,675 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-12-06 19:53:58,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-12-06 19:53:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 19:53:58,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:58,677 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:58,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:53:58,677 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash 140768544, now seen corresponding path program 1 times [2021-12-06 19:53:58,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:58,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826140314] [2021-12-06 19:53:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:58,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 19:53:58,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:58,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826140314] [2021-12-06 19:53:58,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826140314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:58,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:58,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:53:58,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838963324] [2021-12-06 19:53:58,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:58,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:53:58,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:58,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:53:58,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:53:58,783 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:58,875 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2021-12-06 19:53:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:53:58,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 19:53:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:58,876 INFO L225 Difference]: With dead ends: 80 [2021-12-06 19:53:58,876 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 19:53:58,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:53:58,877 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 157 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:58,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 54 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:53:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 19:53:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2021-12-06 19:53:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 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 19:53:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-12-06 19:53:58,881 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 37 [2021-12-06 19:53:58,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:58,881 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-12-06 19:53:58,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-12-06 19:53:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 19:53:58,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:58,883 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:58,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:53:58,883 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:53:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2134585018, now seen corresponding path program 1 times [2021-12-06 19:53:58,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:58,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122380993] [2021-12-06 19:53:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:58,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 19:53:59,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:59,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122380993] [2021-12-06 19:53:59,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122380993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:53:59,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354752688] [2021-12-06 19:53:59,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:59,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:59,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:53:59,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:53:59,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:53:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:59,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:53:59,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:59,383 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 19:53:59,453 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:53:59,453 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 19:53:59,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:53:59,526 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 14 treesize of output 16 [2021-12-06 19:53:59,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:53:59,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:53:59,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:53:59,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:53:59,640 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 15 treesize of output 7 [2021-12-06 19:53:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:53:59,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:54:00,799 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) is different from false [2021-12-06 19:54:01,650 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) is different from false [2021-12-06 19:54:01,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_837 (Array Int Int)) (v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_837))) (store .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) is different from false [2021-12-06 19:54:01,664 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:54:01,664 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 1 case distinctions, treesize of input 39 treesize of output 32 [2021-12-06 19:54:01,672 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:54:01,672 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 294 treesize of output 284 [2021-12-06 19:54:01,680 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 318 treesize of output 302 [2021-12-06 19:54:01,836 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 39 treesize of output 33 [2021-12-06 19:54:02,014 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 10 treesize of output 8 [2021-12-06 19:54:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 10 not checked. [2021-12-06 19:54:02,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354752688] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:54:02,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:54:02,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2021-12-06 19:54:02,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269319219] [2021-12-06 19:54:02,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:54:02,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 19:54:02,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 19:54:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=675, Unknown=3, NotChecked=162, Total=930 [2021-12-06 19:54:02,083 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 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 19:54:02,253 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_main_~data_init~0#1|) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (<= 0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |c_ULTIMATE.start_main_~data_init~0#1| |c_ULTIMATE.start_dll_circular_create_~data#1|) (= |c_ULTIMATE.start_main_~data_init~0#1| 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (forall ((v_ArrVal_837 (Array Int Int)) (v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_837))) (store .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0)) is different from false [2021-12-06 19:54:02,734 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_main_~data_init~0#1|) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (forall ((v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (<= 0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |c_ULTIMATE.start_main_~data_init~0#1| |c_ULTIMATE.start_dll_circular_create_~data#1|) (= |c_ULTIMATE.start_main_~data_init~0#1| 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0)) is different from false [2021-12-06 19:54:03,185 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (forall ((v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (<= 0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |c_ULTIMATE.start_main_~data_init~0#1| |c_ULTIMATE.start_dll_circular_create_~data#1|) (= |c_ULTIMATE.start_main_~data_init~0#1| 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) is different from false [2021-12-06 19:54:03,206 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_main_~data_init~0#1|) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (<= 0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |c_ULTIMATE.start_main_~data_init~0#1| |c_ULTIMATE.start_dll_circular_create_~data#1|) (= |c_ULTIMATE.start_main_~data_init~0#1| 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (forall ((v_ArrVal_837 (Array Int Int)) (v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_837))) (store .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0)) is different from false [2021-12-06 19:54:04,851 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (forall ((v_ArrVal_839 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_839)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (<= 0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |c_ULTIMATE.start_main_~data_init~0#1| 1) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) is different from false [2021-12-06 19:54:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:04,938 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2021-12-06 19:54:04,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:54:04,938 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 19:54:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:04,939 INFO L225 Difference]: With dead ends: 77 [2021-12-06 19:54:04,939 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 19:54:04,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=196, Invalid=1160, Unknown=8, NotChecked=616, Total=1980 [2021-12-06 19:54:04,940 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:04,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 580 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 304 Invalid, 0 Unknown, 147 Unchecked, 0.1s Time] [2021-12-06 19:54:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 19:54:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-06 19:54:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 76 states have internal predecessors, (80), 0 states have call successors, (0), 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 19:54:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2021-12-06 19:54:04,943 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 39 [2021-12-06 19:54:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:04,943 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2021-12-06 19:54:04,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 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 19:54:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2021-12-06 19:54:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 19:54:04,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:04,944 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:04,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:54:05,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 19:54:05,145 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:54:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:05,147 INFO L85 PathProgramCache]: Analyzing trace with hash -56889687, now seen corresponding path program 1 times [2021-12-06 19:54:05,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:05,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913237652] [2021-12-06 19:54:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:05,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 19:54:05,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:05,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913237652] [2021-12-06 19:54:05,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913237652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:05,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:05,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:54:05,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766285907] [2021-12-06 19:54:05,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:05,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:54:05,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:54:05,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:54:05,249 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 19:54:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:05,348 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2021-12-06 19:54:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:54:05,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 43 [2021-12-06 19:54:05,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:05,349 INFO L225 Difference]: With dead ends: 92 [2021-12-06 19:54:05,349 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 19:54:05,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:54:05,350 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 164 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:05,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 83 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:54:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 19:54:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2021-12-06 19:54:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-12-06 19:54:05,352 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 43 [2021-12-06 19:54:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:05,353 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-12-06 19:54:05,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 19:54:05,353 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-12-06 19:54:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 19:54:05,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:05,354 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:05,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:54:05,354 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:54:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:05,355 INFO L85 PathProgramCache]: Analyzing trace with hash -56889686, now seen corresponding path program 1 times [2021-12-06 19:54:05,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:05,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990776503] [2021-12-06 19:54:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:05,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 19:54:05,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:05,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990776503] [2021-12-06 19:54:05,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990776503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:05,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:05,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:54:05,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093447060] [2021-12-06 19:54:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:05,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:54:05,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:54:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:54:05,455 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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 19:54:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:05,553 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2021-12-06 19:54:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:54:05,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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) Word has length 43 [2021-12-06 19:54:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:05,554 INFO L225 Difference]: With dead ends: 76 [2021-12-06 19:54:05,554 INFO L226 Difference]: Without dead ends: 76 [2021-12-06 19:54:05,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:54:05,555 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 172 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:05,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 49 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:54:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-06 19:54:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-12-06 19:54:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-12-06 19:54:05,557 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 43 [2021-12-06 19:54:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:05,557 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-12-06 19:54:05,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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 19:54:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-12-06 19:54:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 19:54:05,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:05,558 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:05,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:54:05,559 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:54:05,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -56889649, now seen corresponding path program 1 times [2021-12-06 19:54:05,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:05,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103586620] [2021-12-06 19:54:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:05,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:54:05,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:05,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103586620] [2021-12-06 19:54:05,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103586620] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:54:05,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362648115] [2021-12-06 19:54:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:05,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:54:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:54:05,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:54:05,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:54:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:05,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 19:54:05,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:54:05,951 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 19:54:06,018 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 19:54:06,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 19:54:06,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:54:06,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:54:06,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:54:06,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:54:06,128 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:54:06,128 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 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-06 19:54:06,132 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 22 treesize of output 24 [2021-12-06 19:54:06,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:54:06,210 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 19:54:06,210 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 21 treesize of output 20 [2021-12-06 19:54:06,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:54:06,217 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 19:54:06,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 30 [2021-12-06 19:54:06,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:54:06,307 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:54:06,307 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 1 case distinctions, treesize of input 34 treesize of output 36 [2021-12-06 19:54:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:54:06,315 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:54:06,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 19:54:06,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,795 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:54:06,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 46 [2021-12-06 19:54:06,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:54:06,802 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:54:06,803 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 1 case distinctions, treesize of input 26 treesize of output 28 [2021-12-06 19:54:06,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:54:06,893 INFO L354 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2021-12-06 19:54:06,893 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 55 treesize of output 39 [2021-12-06 19:54:06,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:54:06,899 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:54:06,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 10 [2021-12-06 19:54:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:54:06,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:54:09,231 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (let ((.cse1 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse2 (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse2))) (or (= (select |c_#valid| .cse0) 1) (and (= .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse2) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)))))) is different from false [2021-12-06 19:54:11,277 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (let ((.cse0 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse1))) (or (and (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse1)) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| .cse2)) (= (select |c_#valid| .cse2) 1))))) is different from false [2021-12-06 19:54:11,309 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1327 (Array Int Int)) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1327))) (store .cse2 |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse2 |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)))) (or (and (forall ((v_ArrVal_1325 (Array Int Int))) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1325))) (store .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)))) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| .cse1)) (= (select |c_#valid| .cse1) 1)))) is different from false [2021-12-06 19:54:11,345 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1327 (Array Int Int)) (v_ArrVal_1322 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (let ((.cse1 (select (select (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_1322)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1327))) (store .cse2 |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse2 |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)))) (or (and (forall ((v_ArrVal_1325 (Array Int Int)) (v_ArrVal_1321 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_1321)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1325))) (store .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| .cse1)) (= (select |c_#valid| .cse1) 1)))) is different from false [2021-12-06 19:54:11,365 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-06 19:54:11,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 123 [2021-12-06 19:54:11,377 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-06 19:54:11,377 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 2 case distinctions, treesize of input 123 treesize of output 115 [2021-12-06 19:54:11,384 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:54:11,385 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 562 treesize of output 538 [2021-12-06 19:54:11,392 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 598 treesize of output 558 [2021-12-06 19:54:11,411 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:54:11,411 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 645 treesize of output 641 [2021-12-06 19:54:11,447 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 373 treesize of output 357 [2021-12-06 19:54:11,661 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 226 treesize of output 210 [2021-12-06 19:54:11,741 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 170 treesize of output 154 [2021-12-06 19:54:11,877 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 8 treesize of output 4 [2021-12-06 19:54:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 4 not checked. [2021-12-06 19:54:12,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362648115] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:54:12,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:54:12,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 40 [2021-12-06 19:54:12,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145586783] [2021-12-06 19:54:12,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:54:12,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 19:54:12,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:12,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 19:54:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1216, Unknown=4, NotChecked=292, Total=1640 [2021-12-06 19:54:12,201 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 41 states, 40 states have (on average 2.675) internal successors, (107), 41 states have internal predecessors, (107), 0 states have call successors, (0), 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 19:55:32,777 WARN L227 SmtUtils]: Spent 36.17s on a formula simplification. DAG size of input: 59 DAG size of output: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:55:53,128 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)) (.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4))) (let ((.cse3 (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (.cse2 (select .cse1 .cse5)) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse6)) (.cse4 (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) (and (not (= .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (not (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 0)) (= (select |c_#valid| (select .cse1 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) 1) (not (= .cse2 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (not (= 0 .cse3)) (= .cse3 1) (= (select |c_#valid| .cse2) 1) (= .cse4 1) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse5) 0) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= (select |c_#valid| .cse0) 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse6) 0) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (not (= .cse4 0)) (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (let ((.cse8 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse9 (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4))) (let ((.cse7 (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse8 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse9))) (or (= (select |c_#valid| .cse7) 1) (and (= .cse7 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse8 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse9) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)))))) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))))) is different from false [2021-12-06 19:55:55,133 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4))) (let ((.cse1 (select .cse0 .cse2))) (and (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (= (select |c_#valid| (select .cse0 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) 1) (not (= .cse1 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (= (select |c_#valid| .cse1) 1) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse2) 0) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (let ((.cse4 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse5 (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse4 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse5))) (or (= (select |c_#valid| .cse3) 1) (and (= .cse3 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse4 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse5) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)))))) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))))) is different from false [2021-12-06 19:56:01,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:01,368 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2021-12-06 19:56:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:56:01,368 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.675) internal successors, (107), 41 states have internal predecessors, (107), 0 states have call successors, (0), 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 43 [2021-12-06 19:56:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:01,369 INFO L225 Difference]: With dead ends: 77 [2021-12-06 19:56:01,369 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 19:56:01,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 113.6s TimeCoverageRelationStatistics Valid=253, Invalid=2098, Unknown=25, NotChecked=594, Total=2970 [2021-12-06 19:56:01,370 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:01,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 451 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 530 Invalid, 0 Unknown, 363 Unchecked, 0.2s Time] [2021-12-06 19:56:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 19:56:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-12-06 19:56:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 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 19:56:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-12-06 19:56:01,372 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 43 [2021-12-06 19:56:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:01,372 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-12-06 19:56:01,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.675) internal successors, (107), 41 states have internal predecessors, (107), 0 states have call successors, (0), 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 19:56:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-12-06 19:56:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 19:56:01,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:01,373 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:01,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:56:01,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 19:56:01,574 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:56:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash -56889648, now seen corresponding path program 1 times [2021-12-06 19:56:01,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:01,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103933865] [2021-12-06 19:56:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:01,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:56:01,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:01,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103933865] [2021-12-06 19:56:01,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103933865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:56:01,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533325923] [2021-12-06 19:56:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:01,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:56:01,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:56:01,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:56:01,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:56:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:02,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-06 19:56:02,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:56:02,120 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 19:56:02,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 19:56:02,151 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:56:02,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 19:56:02,202 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 19:56:02,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:56:02,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:56:02,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:56:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:02,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:56:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:02,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:56:02,280 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:56:02,280 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 1 case distinctions, treesize of input 54 treesize of output 53 [2021-12-06 19:56:02,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2021-12-06 19:56:02,372 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 36 treesize of output 36 [2021-12-06 19:56:02,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2021-12-06 19:56:02,423 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-12-06 19:56:02,423 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 43 treesize of output 42 [2021-12-06 19:56:02,433 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-12-06 19:56:02,434 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 1 case distinctions, treesize of input 36 treesize of output 35 [2021-12-06 19:56:03,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:03,051 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 41 treesize of output 34 [2021-12-06 19:56:03,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:03,055 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 40 treesize of output 33 [2021-12-06 19:56:03,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:03,073 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2021-12-06 19:56:03,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:03,076 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 32 treesize of output 14 [2021-12-06 19:56:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:56:03,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:56:03,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:03,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2021-12-06 19:56:04,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:04,083 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:04,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 98 [2021-12-06 19:56:04,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:04,091 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:04,091 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 2 case distinctions, treesize of input 98 treesize of output 103 [2021-12-06 19:56:04,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:04,102 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:04,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 160 [2021-12-06 19:56:04,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:04,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:04,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 275 treesize of output 275 [2021-12-06 19:56:04,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:04,130 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:04,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 390 treesize of output 390 [2021-12-06 19:56:04,142 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 299 treesize of output 291 [2021-12-06 19:56:04,149 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 291 treesize of output 287 [2021-12-06 19:56:04,156 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 287 treesize of output 279 [2021-12-06 19:56:04,163 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 279 treesize of output 263 [2021-12-06 19:56:04,169 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 263 treesize of output 255 [2021-12-06 19:56:04,176 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 255 treesize of output 239 [2021-12-06 19:56:04,740 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:56:04,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2021-12-06 19:56:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:56:04,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533325923] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:56:04,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:56:04,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 48 [2021-12-06 19:56:04,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796823552] [2021-12-06 19:56:04,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:56:04,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 19:56:04,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 19:56:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2168, Unknown=15, NotChecked=0, Total=2352 [2021-12-06 19:56:04,751 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 49 states, 48 states have (on average 2.3958333333333335) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 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 19:56:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:05,561 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2021-12-06 19:56:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:56:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.3958333333333335) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 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 43 [2021-12-06 19:56:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:05,562 INFO L225 Difference]: With dead ends: 83 [2021-12-06 19:56:05,562 INFO L226 Difference]: Without dead ends: 83 [2021-12-06 19:56:05,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=305, Invalid=3102, Unknown=15, NotChecked=0, Total=3422 [2021-12-06 19:56:05,564 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 77 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:05,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 422 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 617 Invalid, 0 Unknown, 300 Unchecked, 0.3s Time] [2021-12-06 19:56:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-06 19:56:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2021-12-06 19:56:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 77 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:56:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-12-06 19:56:05,566 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 43 [2021-12-06 19:56:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:05,566 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-12-06 19:56:05,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.3958333333333335) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 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 19:56:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-12-06 19:56:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 19:56:05,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:05,567 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:05,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:56:05,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 19:56:05,767 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-12-06 19:56:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1163623530, now seen corresponding path program 1 times [2021-12-06 19:56:05,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:05,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999241621] [2021-12-06 19:56:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:05,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:06,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:06,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999241621] [2021-12-06 19:56:06,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999241621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:56:06,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158782602] [2021-12-06 19:56:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:06,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:56:06,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:56:06,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:56:06,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eead427-1e15-45cd-a1cf-c152db817765/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:56:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-06 19:56:06,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:56:06,529 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 19:56:06,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 19:56:06,646 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-06 19:56:06,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-06 19:56:06,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:56:06,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:56:06,895 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-06 19:56:06,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2021-12-06 19:56:06,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:56:06,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:56:06,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:56:07,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:56:07,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:56:07,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:56:07,043 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:56:07,043 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 1 case distinctions, treesize of input 81 treesize of output 74 [2021-12-06 19:56:07,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2021-12-06 19:56:07,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:56:07,163 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 45 treesize of output 32 [2021-12-06 19:56:07,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 19:56:07,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:56:07,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:07,250 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:56:07,250 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 54 treesize of output 44 [2021-12-06 19:56:07,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 19:56:07,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 19:56:07,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 19:56:07,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,437 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:56:07,437 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 73 treesize of output 50 [2021-12-06 19:56:07,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:56:07,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:56:07,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:07,469 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-12-06 19:56:07,469 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 71 treesize of output 39 [2021-12-06 19:56:07,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:07,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-12-06 19:56:07,574 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 15 treesize of output 7 [2021-12-06 19:56:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:07,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:56:08,019 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1871 Int) (v_ArrVal_1860 (Array Int Int)) (v_ArrVal_1870 (Array Int Int)) (v_ArrVal_1872 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse3 (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4))) (let ((.cse1 (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| v_ArrVal_1872) .cse3)) (.cse0 (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| v_ArrVal_1871) .cse3))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1860) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1870) .cse0) .cse1) |c_ULTIMATE.start_main_~data_init~0#1|) (and (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| .cse1) (= .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)))))) is different from false [2021-12-06 19:56:08,076 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1871 Int) (v_ArrVal_1860 (Array Int Int)) (v_ArrVal_1870 (Array Int Int)) (v_ArrVal_1872 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (.cse3 (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (let ((.cse0 (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_1871) .cse3)) (.cse1 (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| v_ArrVal_1872) .cse3))) (or (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1860) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| v_ArrVal_1870) .cse0) .cse1)) (and (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| .cse0) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| .cse1)))))) is different from false [2021-12-06 19:56:08,538 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-06 19:56:08,539 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 2 case distinctions, treesize of input 241 treesize of output 207 [2021-12-06 19:56:08,556 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:08,556 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 2029 treesize of output 2003 [2021-12-06 19:56:08,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:08,569 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 2263 treesize of output 2199 [2021-12-06 19:56:08,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:08,598 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:08,598 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 2 case distinctions, treesize of input 2115 treesize of output 1587 [2021-12-06 19:56:08,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:56:08,628 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 8229 treesize of output 8067 [2021-12-06 19:56:08,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:08,681 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 9463 treesize of output 9127 [2021-12-06 19:56:09,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:09,135 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 5259 treesize of output 5083 [2021-12-06 19:56:09,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:56:09,723 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 4376 treesize of output 4284