./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple_built_from_end.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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/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 0eb3d3e07cae1efa9dc9af5091aea6a309746434756c62bcf3ece83b84aec27a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:07:57,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:07:57,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:07:57,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:07:57,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:07:57,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:07:57,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:07:57,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:07:57,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:07:57,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:07:57,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:07:57,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:07:57,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:07:57,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:07:57,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:07:57,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:07:57,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:07:57,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:07:57,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:07:57,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:07:57,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:07:57,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:07:57,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:07:57,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:07:57,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:07:57,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:07:57,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:07:57,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:07:57,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:07:57,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:07:57,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:07:57,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:07:57,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:07:57,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:07:57,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:07:57,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:07:57,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:07:57,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:07:57,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:07:57,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:07:57,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:07:57,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 18:07:57,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:07:57,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:07:57,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:07:57,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:07:57,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:07:57,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:07:57,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:07:57,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:07:57,471 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:07:57,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:07:57,472 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:07:57,472 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:07:57,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:07:57,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:07:57,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:07:57,473 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:07:57,473 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:07:57,473 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:07:57,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:07:57,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:07:57,474 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:07:57,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:07:57,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:07:57,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:07:57,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:07:57,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:07:57,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:07:57,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:07:57,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:07:57,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:07:57,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:07:57,476 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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eb3d3e07cae1efa9dc9af5091aea6a309746434756c62bcf3ece83b84aec27a [2021-12-06 18:07:57,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:07:57,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:07:57,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:07:57,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:07:57,673 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:07:57,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-properties/simple_built_from_end.i [2021-12-06 18:07:57,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/9f83ef310/f0c19014e2f345919274010716bb032a/FLAGc9410c376 [2021-12-06 18:07:58,122 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:07:58,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/sv-benchmarks/c/list-properties/simple_built_from_end.i [2021-12-06 18:07:58,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/9f83ef310/f0c19014e2f345919274010716bb032a/FLAGc9410c376 [2021-12-06 18:07:58,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/9f83ef310/f0c19014e2f345919274010716bb032a [2021-12-06 18:07:58,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:07:58,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:07:58,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:07:58,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:07:58,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:07:58,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc51244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58, skipping insertion in model container [2021-12-06 18:07:58,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:07:58,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:07:58,411 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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/sv-benchmarks/c/list-properties/simple_built_from_end.i[23125,23138] [2021-12-06 18:07:58,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:07:58,423 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:07:58,449 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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/sv-benchmarks/c/list-properties/simple_built_from_end.i[23125,23138] [2021-12-06 18:07:58,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:07:58,471 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:07:58,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58 WrapperNode [2021-12-06 18:07:58,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:07:58,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:07:58,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:07:58,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:07:58,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,505 INFO L137 Inliner]: procedures = 124, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-12-06 18:07:58,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:07:58,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:07:58,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:07:58,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:07:58,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:07:58,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:07:58,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:07:58,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:07:58,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (1/1) ... [2021-12-06 18:07:58,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:07:58,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:07:58,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:07:58,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:07:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:07:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:07:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:07:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:07:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:07:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:07:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:07:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:07:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:07:58,660 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:07:58,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:07:58,755 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:07:58,761 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:07:58,761 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:07:58,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:07:58 BoogieIcfgContainer [2021-12-06 18:07:58,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:07:58,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:07:58,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:07:58,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:07:58,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:07:58" (1/3) ... [2021-12-06 18:07:58,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe1fa60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:07:58, skipping insertion in model container [2021-12-06 18:07:58,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:07:58" (2/3) ... [2021-12-06 18:07:58,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe1fa60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:07:58, skipping insertion in model container [2021-12-06 18:07:58,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:07:58" (3/3) ... [2021-12-06 18:07:58,769 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2021-12-06 18:07:58,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:07:58,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-12-06 18:07:58,808 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:07:58,813 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 18:07:58,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-12-06 18:07:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 18:07:58,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:58,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 18:07:58,829 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:58,833 INFO L85 PathProgramCache]: Analyzing trace with hash 28716783, now seen corresponding path program 1 times [2021-12-06 18:07:58,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61646346] [2021-12-06 18:07:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:58,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:58,936 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 18:07:58,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:58,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61646346] [2021-12-06 18:07:58,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61646346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:58,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:58,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:07:58,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168033665] [2021-12-06 18:07:58,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:58,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:07:58,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:07:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:07:58,967 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:07:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:58,977 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-12-06 18:07:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:07:58,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-06 18:07:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:58,984 INFO L225 Difference]: With dead ends: 28 [2021-12-06 18:07:58,984 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 18:07:58,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:07:58,989 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:58,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 18:07:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-06 18:07:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-06 18:07:59,014 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 5 [2021-12-06 18:07:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,015 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-06 18:07:59,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:07:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-06 18:07:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:07:59,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:07:59,016 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash 889570012, now seen corresponding path program 1 times [2021-12-06 18:07:59,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632560610] [2021-12-06 18:07:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,051 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 18:07:59,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632560610] [2021-12-06 18:07:59,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632560610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:07:59,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037441522] [2021-12-06 18:07:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:07:59,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:07:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:07:59,054 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,083 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-12-06 18:07:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:07:59,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:07:59,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,084 INFO L225 Difference]: With dead ends: 39 [2021-12-06 18:07:59,084 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 18:07:59,085 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 18:07:59,086 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:59,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 18:07:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2021-12-06 18:07:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 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 18:07:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-12-06 18:07:59,091 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 6 [2021-12-06 18:07:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,092 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-12-06 18:07:59,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-12-06 18:07:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:07:59,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:07:59,093 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,093 INFO L85 PathProgramCache]: Analyzing trace with hash 889570056, now seen corresponding path program 1 times [2021-12-06 18:07:59,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37090215] [2021-12-06 18:07:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,126 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 18:07:59,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37090215] [2021-12-06 18:07:59,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37090215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:07:59,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741820084] [2021-12-06 18:07:59,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:07:59,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:07:59,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:07:59,128 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,146 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-12-06 18:07:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:07:59,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:07:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,147 INFO L225 Difference]: With dead ends: 36 [2021-12-06 18:07:59,147 INFO L226 Difference]: Without dead ends: 35 [2021-12-06 18:07:59,148 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 18:07:59,149 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:59,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 38 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-06 18:07:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2021-12-06 18:07:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 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 18:07:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-12-06 18:07:59,152 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 6 [2021-12-06 18:07:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,153 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-12-06 18:07:59,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-12-06 18:07:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:07:59,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:07:59,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 889571371, now seen corresponding path program 1 times [2021-12-06 18:07:59,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273012330] [2021-12-06 18:07:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,187 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 18:07:59,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273012330] [2021-12-06 18:07:59,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273012330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:07:59,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544042170] [2021-12-06 18:07:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:07:59,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:07:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:07:59,190 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,211 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-12-06 18:07:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:07:59,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:07:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,212 INFO L225 Difference]: With dead ends: 25 [2021-12-06 18:07:59,212 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 18:07:59,212 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 18:07:59,213 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:59,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 18:07:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-06 18:07:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-06 18:07:59,217 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 6 [2021-12-06 18:07:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,217 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-06 18:07:59,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-06 18:07:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:07:59,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:07:59,218 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash 889571372, now seen corresponding path program 1 times [2021-12-06 18:07:59,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805720793] [2021-12-06 18:07:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,253 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 18:07:59,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805720793] [2021-12-06 18:07:59,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805720793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:07:59,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709155620] [2021-12-06 18:07:59,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:07:59,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:07:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:07:59,256 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,273 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-06 18:07:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:07:59,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:07:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,273 INFO L225 Difference]: With dead ends: 23 [2021-12-06 18:07:59,273 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 18:07:59,274 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 18:07:59,275 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:59,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 18:07:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-06 18:07:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-12-06 18:07:59,278 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 6 [2021-12-06 18:07:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,278 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-12-06 18:07:59,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-12-06 18:07:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:07:59,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,278 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:07:59,279 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1376170662, now seen corresponding path program 1 times [2021-12-06 18:07:59,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098753560] [2021-12-06 18:07:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:07:59,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098753560] [2021-12-06 18:07:59,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098753560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:07:59,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038571976] [2021-12-06 18:07:59,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:07:59,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:07:59,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:07:59,324 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 18:07:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,352 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-12-06 18:07:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:07:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 18:07:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,353 INFO L225 Difference]: With dead ends: 38 [2021-12-06 18:07:59,353 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 18:07:59,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:07:59,354 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:59,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 22 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 18:07:59,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2021-12-06 18:07:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 23 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 18:07:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-12-06 18:07:59,358 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2021-12-06 18:07:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-06 18:07:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 18:07:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-12-06 18:07:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:07:59,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,359 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:07:59,359 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1376170706, now seen corresponding path program 1 times [2021-12-06 18:07:59,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364957636] [2021-12-06 18:07:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:07:59,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364957636] [2021-12-06 18:07:59,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364957636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:07:59,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641372717] [2021-12-06 18:07:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:07:59,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:07:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:07:59,404 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 18:07:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,443 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-12-06 18:07:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:07:59,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 18:07:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,444 INFO L225 Difference]: With dead ends: 29 [2021-12-06 18:07:59,444 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 18:07:59,445 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 18:07:59,446 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 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 18:07:59,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 18:07:59,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-12-06 18:07:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-12-06 18:07:59,449 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2021-12-06 18:07:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,450 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-12-06 18:07:59,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 18:07:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-12-06 18:07:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:07:59,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,451 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:07:59,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1376170707, now seen corresponding path program 1 times [2021-12-06 18:07:59,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76303985] [2021-12-06 18:07:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:07:59,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76303985] [2021-12-06 18:07:59,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76303985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:07:59,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186625510] [2021-12-06 18:07:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:07:59,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:07:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:07:59,507 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 18:07:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,541 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-12-06 18:07:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:07:59,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 18:07:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,542 INFO L225 Difference]: With dead ends: 33 [2021-12-06 18:07:59,542 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 18:07:59,543 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 18:07:59,544 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:59,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 19 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 18:07:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2021-12-06 18:07:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 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 18:07:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-12-06 18:07:59,548 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2021-12-06 18:07:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,548 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-12-06 18:07:59,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 18:07:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-12-06 18:07:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:07:59,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,549 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:07:59,549 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash -349878285, now seen corresponding path program 1 times [2021-12-06 18:07:59,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082267545] [2021-12-06 18:07:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:07:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:07:59,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:07:59,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082267545] [2021-12-06 18:07:59,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082267545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:07:59,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:07:59,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:07:59,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317030356] [2021-12-06 18:07:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:07:59,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:07:59,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:07:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:07:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:07:59,607 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:07:59,640 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-12-06 18:07:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:07:59,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 18:07:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:07:59,641 INFO L225 Difference]: With dead ends: 30 [2021-12-06 18:07:59,641 INFO L226 Difference]: Without dead ends: 30 [2021-12-06 18:07:59,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:07:59,642 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:07:59,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 42 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:07:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-06 18:07:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-12-06 18:07:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-12-06 18:07:59,645 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2021-12-06 18:07:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:07:59,646 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-12-06 18:07:59,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:07:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-12-06 18:07:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 18:07:59,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:07:59,647 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:07:59,647 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:07:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:07:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash 666457592, now seen corresponding path program 1 times [2021-12-06 18:07:59,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:07:59,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267116055] [2021-12-06 18:07:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:07:59,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:07:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:07:59,661 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:07:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:07:59,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:07:59,692 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:07:59,693 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2021-12-06 18:07:59,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (8 of 10 remaining) [2021-12-06 18:07:59,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (7 of 10 remaining) [2021-12-06 18:07:59,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (6 of 10 remaining) [2021-12-06 18:07:59,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (5 of 10 remaining) [2021-12-06 18:07:59,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (4 of 10 remaining) [2021-12-06 18:07:59,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (3 of 10 remaining) [2021-12-06 18:07:59,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2021-12-06 18:07:59,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 10 remaining) [2021-12-06 18:07:59,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (0 of 10 remaining) [2021-12-06 18:07:59,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:07:59,697 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:07:59,699 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:07:59,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:07:59 BoogieIcfgContainer [2021-12-06 18:07:59,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:07:59,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:07:59,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:07:59,716 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:07:59,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:07:58" (3/4) ... [2021-12-06 18:07:59,718 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:07:59,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:07:59,719 INFO L158 Benchmark]: Toolchain (without parser) took 1574.08ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 38.2MB in the beginning and 64.1MB in the end (delta: -25.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:07:59,719 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 77.6MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:07:59,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.24ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 38.0MB in the beginning and 71.9MB in the end (delta: -34.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-06 18:07:59,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.62ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:07:59,720 INFO L158 Benchmark]: Boogie Preprocessor took 21.28ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 69.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:07:59,720 INFO L158 Benchmark]: RCFGBuilder took 235.02ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 58.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:07:59,720 INFO L158 Benchmark]: TraceAbstraction took 951.55ms. Allocated memory is still 102.8MB. Free memory was 57.7MB in the beginning and 64.8MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:07:59,720 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 64.1MB in the end (delta: 709.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:07:59,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 77.6MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.24ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 38.0MB in the beginning and 71.9MB in the end (delta: -34.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.62ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.28ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 69.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 235.02ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 58.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 951.55ms. Allocated memory is still 102.8MB. Free memory was 57.7MB in the beginning and 64.8MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 64.1MB in the end (delta: 709.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List t; [L533] List p = 0; VAL [p={0:0}] [L534] COND TRUE __VERIFIER_nondet_int() [L535] t = (List) malloc(sizeof(struct node)) [L536] COND FALSE !(t == 0) VAL [p={0:0}, t={-1:0}] [L537] t->h = 1 VAL [p={0:0}, t={-1:0}] [L538] t->n = p VAL [p={0:0}, t={-1:0}] [L539] p = t VAL [p={-1:0}, t={-1:0}] [L534] COND FALSE !(__VERIFIER_nondet_int()) [L541] COND TRUE p!=0 VAL [p={-1:0}, t={-1:0}] [L542] EXPR p->h VAL [p={-1:0}, p->h=1, t={-1:0}] [L542] COND FALSE !(p->h != 1) [L545] EXPR p->n VAL [p={-1:0}, p->n={0:0}, t={-1:0}] [L545] p = p->n [L541] COND FALSE !(p!=0) VAL [p={0:0}, t={-1:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 230 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 160 mSDtfsCounter, 178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 18:07:59,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/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 0eb3d3e07cae1efa9dc9af5091aea6a309746434756c62bcf3ece83b84aec27a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:08:01,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:08:01,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:08:01,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:08:01,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:08:01,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:08:01,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:08:01,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:08:01,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:08:01,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:08:01,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:08:01,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:08:01,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:08:01,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:08:01,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:08:01,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:08:01,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:08:01,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:08:01,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:08:01,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:08:01,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:08:01,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:08:01,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:08:01,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:08:01,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:08:01,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:08:01,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:08:01,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:08:01,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:08:01,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:08:01,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:08:01,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:08:01,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:08:01,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:08:01,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:08:01,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:08:01,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:08:01,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:08:01,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:08:01,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:08:01,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:08:01,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 18:08:01,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:08:01,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:08:01,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:08:01,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:08:01,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:08:01,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:08:01,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:08:01,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:08:01,447 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:08:01,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:08:01,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:08:01,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:08:01,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:08:01,449 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:08:01,449 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:08:01,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:08:01,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:08:01,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:08:01,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:08:01,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:08:01,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:08:01,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:08:01,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:08:01,450 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:08:01,450 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:08:01,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:08:01,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:08:01,451 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eb3d3e07cae1efa9dc9af5091aea6a309746434756c62bcf3ece83b84aec27a [2021-12-06 18:08:01,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:08:01,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:08:01,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:08:01,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:08:01,700 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:08:01,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-properties/simple_built_from_end.i [2021-12-06 18:08:01,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/323c115ab/485b9192cdf7426b9fdb084def423c04/FLAG3699a3d05 [2021-12-06 18:08:02,146 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:08:02,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/sv-benchmarks/c/list-properties/simple_built_from_end.i [2021-12-06 18:08:02,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/323c115ab/485b9192cdf7426b9fdb084def423c04/FLAG3699a3d05 [2021-12-06 18:08:02,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/data/323c115ab/485b9192cdf7426b9fdb084def423c04 [2021-12-06 18:08:02,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:08:02,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:08:02,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:08:02,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:08:02,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:08:02,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239dbbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02, skipping insertion in model container [2021-12-06 18:08:02,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:08:02,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:08:02,430 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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/sv-benchmarks/c/list-properties/simple_built_from_end.i[23125,23138] [2021-12-06 18:08:02,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:08:02,443 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:08:02,470 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_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/sv-benchmarks/c/list-properties/simple_built_from_end.i[23125,23138] [2021-12-06 18:08:02,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:08:02,495 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:08:02,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02 WrapperNode [2021-12-06 18:08:02,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:08:02,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:08:02,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:08:02,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:08:02,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,528 INFO L137 Inliner]: procedures = 127, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-12-06 18:08:02,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:08:02,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:08:02,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:08:02,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:08:02,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:08:02,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:08:02,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:08:02,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:08:02,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (1/1) ... [2021-12-06 18:08:02,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:08:02,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:08:02,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:08:02,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:08:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 18:08:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:08:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:08:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:08:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:08:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 18:08:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 18:08:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:08:02,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:08:02,686 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:08:02,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:08:02,850 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:08:02,855 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:08:02,855 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:08:02,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:08:02 BoogieIcfgContainer [2021-12-06 18:08:02,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:08:02,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:08:02,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:08:02,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:08:02,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:08:02" (1/3) ... [2021-12-06 18:08:02,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd06375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:08:02, skipping insertion in model container [2021-12-06 18:08:02,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:02" (2/3) ... [2021-12-06 18:08:02,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd06375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:08:02, skipping insertion in model container [2021-12-06 18:08:02,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:08:02" (3/3) ... [2021-12-06 18:08:02,861 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2021-12-06 18:08:02,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:08:02,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-12-06 18:08:02,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:08:02,903 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 18:08:02,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-12-06 18:08:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 2.0) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 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 18:08:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 18:08:02,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:02,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 18:08:02,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash 28698492, now seen corresponding path program 1 times [2021-12-06 18:08:02,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:02,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888208291] [2021-12-06 18:08:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:02,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:02,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:02,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:02,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:08:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:02,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:08:02,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:03,009 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 18:08:03,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:03,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:03,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888208291] [2021-12-06 18:08:03,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888208291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:03,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:03,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:08:03,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262722711] [2021-12-06 18:08:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:03,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:08:03,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:08:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:08:03,037 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 2.0) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:03,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:03,084 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-06 18:08:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:08:03,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-06 18:08:03,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:03,091 INFO L225 Difference]: With dead ends: 40 [2021-12-06 18:08:03,091 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 18:08:03,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:08:03,095 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:03,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:08:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 18:08:03,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2021-12-06 18:08:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.85) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:08:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-12-06 18:08:03,120 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 5 [2021-12-06 18:08:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:03,120 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-12-06 18:08:03,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-12-06 18:08:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 18:08:03,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:03,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 18:08:03,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:08:03,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:03,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash 28698536, now seen corresponding path program 1 times [2021-12-06 18:08:03,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:03,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204008344] [2021-12-06 18:08:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:03,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:03,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:03,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:03,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:08:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:03,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:08:03,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:03,481 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 18:08:03,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:03,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:03,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204008344] [2021-12-06 18:08:03,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204008344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:03,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:03,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:08:03,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516233180] [2021-12-06 18:08:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:03,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:08:03,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:03,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:08:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:08:03,484 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:03,517 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-12-06 18:08:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:08:03,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-06 18:08:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:03,519 INFO L225 Difference]: With dead ends: 34 [2021-12-06 18:08:03,519 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 18:08:03,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:08:03,521 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:03,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 36 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:08:03,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 18:08:03,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2021-12-06 18:08:03,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:08:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-06 18:08:03,526 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 5 [2021-12-06 18:08:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:03,526 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-06 18:08:03,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-06 18:08:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 18:08:03,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:03,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 18:08:03,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:08:03,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:03,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash 28699851, now seen corresponding path program 1 times [2021-12-06 18:08:03,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:03,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927945875] [2021-12-06 18:08:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:03,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:03,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:03,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:08:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:03,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:08:03,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:03,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:08:03,918 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 18:08:03,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:03,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:03,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927945875] [2021-12-06 18:08:03,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927945875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:03,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:03,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:08:03,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556842873] [2021-12-06 18:08:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:03,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:08:03,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:08:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:08:03,920 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:03,961 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-06 18:08:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:08:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-06 18:08:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:03,962 INFO L225 Difference]: With dead ends: 23 [2021-12-06 18:08:03,962 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 18:08:03,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:08:03,963 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:03,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:08:03,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 18:08:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-06 18:08:03,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:08:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-12-06 18:08:03,966 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2021-12-06 18:08:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:03,966 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-12-06 18:08:03,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-12-06 18:08:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 18:08:03,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:03,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 18:08:03,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 18:08:04,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:04,168 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash 28699852, now seen corresponding path program 1 times [2021-12-06 18:08:04,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:04,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048389732] [2021-12-06 18:08:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:04,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:04,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:04,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:04,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 18:08:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:04,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:08:04,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:04,297 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 18:08:04,316 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 18:08:04,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:04,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048389732] [2021-12-06 18:08:04,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048389732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:04,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:04,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:08:04,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690169362] [2021-12-06 18:08:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:04,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:08:04,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:08:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:08:04,318 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:04,351 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-12-06 18:08:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:08:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-06 18:08:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:04,352 INFO L225 Difference]: With dead ends: 21 [2021-12-06 18:08:04,352 INFO L226 Difference]: Without dead ends: 21 [2021-12-06 18:08:04,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:08:04,353 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:04,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:08:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-06 18:08:04,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-06 18:08:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:08:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-12-06 18:08:04,356 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 5 [2021-12-06 18:08:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:04,356 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-12-06 18:08:04,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 18:08:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-12-06 18:08:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:08:04,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:04,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:08:04,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 18:08:04,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:04,558 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash -653129230, now seen corresponding path program 1 times [2021-12-06 18:08:04,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:04,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162694768] [2021-12-06 18:08:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:04,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:04,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:04,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:04,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 18:08:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:04,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:08:04,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:04,665 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 18:08:04,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:04,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:04,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162694768] [2021-12-06 18:08:04,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162694768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:04,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:04,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:08:04,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913286406] [2021-12-06 18:08:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:04,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:08:04,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:08:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:08:04,667 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 18:08:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:04,732 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-12-06 18:08:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:08:04,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 18:08:04,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:04,733 INFO L225 Difference]: With dead ends: 36 [2021-12-06 18:08:04,734 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 18:08:04,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 18:08:04,735 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:04,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:08:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 18:08:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2021-12-06 18:08:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 21 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 18:08:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-12-06 18:08:04,739 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2021-12-06 18:08:04,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:04,740 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-12-06 18:08:04,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 18:08:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-12-06 18:08:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:08:04,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:04,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:08:04,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 18:08:04,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:04,945 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash -653129186, now seen corresponding path program 1 times [2021-12-06 18:08:04,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:04,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597775532] [2021-12-06 18:08:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:04,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:04,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:04,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:04,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 18:08:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:05,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:08:05,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:05,037 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 18:08:05,060 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 18:08:05,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:05,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:05,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597775532] [2021-12-06 18:08:05,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597775532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:05,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:05,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:08:05,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851071278] [2021-12-06 18:08:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:05,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:08:05,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:08:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:08:05,062 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 18:08:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:05,141 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-12-06 18:08:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:08:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 18:08:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:05,142 INFO L225 Difference]: With dead ends: 27 [2021-12-06 18:08:05,142 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 18:08:05,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 18:08:05,143 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:05,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:08:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 18:08:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-12-06 18:08:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:08:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-12-06 18:08:05,145 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2021-12-06 18:08:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:05,146 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-12-06 18:08:05,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 18:08:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-12-06 18:08:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:08:05,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:05,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:08:05,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 18:08:05,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:05,348 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -653129185, now seen corresponding path program 1 times [2021-12-06 18:08:05,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:05,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050637321] [2021-12-06 18:08:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:05,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:05,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:05,354 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:05,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 18:08:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:05,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:08:05,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:05,475 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 18:08:05,521 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 18:08:05,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:05,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:05,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050637321] [2021-12-06 18:08:05,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050637321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:05,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:05,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:08:05,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214442378] [2021-12-06 18:08:05,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:05,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:08:05,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:08:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:08:05,522 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 18:08:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:05,592 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-12-06 18:08:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:08:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 18:08:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:05,593 INFO L225 Difference]: With dead ends: 31 [2021-12-06 18:08:05,593 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 18:08:05,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 18:08:05,594 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:05,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:08:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 18:08:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2021-12-06 18:08:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:08:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-12-06 18:08:05,598 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2021-12-06 18:08:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:05,598 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-12-06 18:08:05,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 18:08:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-12-06 18:08:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:08:05,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:05,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:08:05,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 18:08:05,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:05,801 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash -591922145, now seen corresponding path program 1 times [2021-12-06 18:08:05,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896892321] [2021-12-06 18:08:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:05,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:05,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:05,807 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:05,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 18:08:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:05,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:08:05,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:08:05,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:08:05,930 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 18:08:05,930 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 18:08:05,951 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 18:08:05,958 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 18:08:05,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:08:05,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:08:05,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896892321] [2021-12-06 18:08:05,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896892321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:05,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:05,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:08:05,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370768525] [2021-12-06 18:08:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:05,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:08:05,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:08:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:08:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:08:05,960 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 18:08:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:06,052 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-12-06 18:08:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:08:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 18:08:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:06,053 INFO L225 Difference]: With dead ends: 28 [2021-12-06 18:08:06,053 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 18:08:06,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:08:06,054 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:06,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:08:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 18:08:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-12-06 18:08:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 23 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 18:08:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-12-06 18:08:06,057 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2021-12-06 18:08:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:06,057 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-06 18:08:06,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 18:08:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-12-06 18:08:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:08:06,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:06,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:08:06,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 18:08:06,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:06,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-12-06 18:08:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1187913323, now seen corresponding path program 1 times [2021-12-06 18:08:06,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:08:06,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844920226] [2021-12-06 18:08:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:06,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:08:06,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:08:06,266 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:08:06,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 18:08:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:08:06,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:08:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:08:06,395 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 18:08:06,395 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:08:06,396 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2021-12-06 18:08:06,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (8 of 10 remaining) [2021-12-06 18:08:06,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (7 of 10 remaining) [2021-12-06 18:08:06,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (6 of 10 remaining) [2021-12-06 18:08:06,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (5 of 10 remaining) [2021-12-06 18:08:06,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (4 of 10 remaining) [2021-12-06 18:08:06,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (3 of 10 remaining) [2021-12-06 18:08:06,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2021-12-06 18:08:06,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 10 remaining) [2021-12-06 18:08:06,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (0 of 10 remaining) [2021-12-06 18:08:06,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-06 18:08:06,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:08:06,608 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:08:06,616 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:08:06,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:08:06 BoogieIcfgContainer [2021-12-06 18:08:06,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:08:06,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:08:06,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:08:06,654 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:08:06,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:08:02" (3/4) ... [2021-12-06 18:08:06,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:08:06,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:08:06,657 INFO L158 Benchmark]: Toolchain (without parser) took 4487.52ms. Allocated memory was 50.3MB in the beginning and 75.5MB in the end (delta: 25.2MB). Free memory was 26.4MB in the beginning and 38.6MB in the end (delta: -12.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2021-12-06 18:08:06,657 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 50.3MB. Free memory is still 31.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:08:06,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.51ms. Allocated memory was 50.3MB in the beginning and 75.5MB in the end (delta: 25.2MB). Free memory was 26.2MB in the beginning and 51.9MB in the end (delta: -25.8MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2021-12-06 18:08:06,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.86ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 49.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:08:06,658 INFO L158 Benchmark]: Boogie Preprocessor took 22.24ms. Allocated memory is still 75.5MB. Free memory was 49.8MB in the beginning and 48.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:08:06,658 INFO L158 Benchmark]: RCFGBuilder took 304.49ms. Allocated memory is still 75.5MB. Free memory was 48.4MB in the beginning and 56.4MB in the end (delta: -8.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2021-12-06 18:08:06,658 INFO L158 Benchmark]: TraceAbstraction took 3796.39ms. Allocated memory is still 75.5MB. Free memory was 55.9MB in the beginning and 39.2MB in the end (delta: 16.7MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-12-06 18:08:06,659 INFO L158 Benchmark]: Witness Printer took 2.58ms. Allocated memory is still 75.5MB. Free memory was 39.2MB in the beginning and 38.6MB in the end (delta: 559.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:08:06,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 50.3MB. Free memory is still 31.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.51ms. Allocated memory was 50.3MB in the beginning and 75.5MB in the end (delta: 25.2MB). Free memory was 26.2MB in the beginning and 51.9MB in the end (delta: -25.8MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.86ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 49.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.24ms. Allocated memory is still 75.5MB. Free memory was 49.8MB in the beginning and 48.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.49ms. Allocated memory is still 75.5MB. Free memory was 48.4MB in the beginning and 56.4MB in the end (delta: -8.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3796.39ms. Allocated memory is still 75.5MB. Free memory was 55.9MB in the beginning and 39.2MB in the end (delta: 16.7MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Witness Printer took 2.58ms. Allocated memory is still 75.5MB. Free memory was 39.2MB in the beginning and 38.6MB in the end (delta: 559.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List t; [L533] List p = 0; VAL [p={0:0}] [L534] COND TRUE __VERIFIER_nondet_int() [L535] t = (List) malloc(sizeof(struct node)) [L536] COND FALSE !(t == 0) VAL [p={0:0}, t={6:0}] [L537] t->h = 1 VAL [p={0:0}, t={6:0}] [L538] t->n = p VAL [p={0:0}, t={6:0}] [L539] p = t VAL [p={6:0}, t={6:0}] [L534] COND FALSE !(__VERIFIER_nondet_int()) [L541] COND TRUE p!=0 VAL [p={6:0}, t={6:0}] [L542] EXPR p->h VAL [p={6:0}, p->h=1, t={6:0}] [L542] COND FALSE !(p->h != 1) [L545] EXPR p->n VAL [p={6:0}, p->n={0:0}, t={6:0}] [L545] p = p->n [L541] COND FALSE !(p!=0) VAL [p={0:0}, t={6:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 119 mSDtfsCounter, 179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 274 SizeOfPredicates, 9 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 18:08:06,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1d97ed-8f2d-48b4-967b-5a5361caa6d1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample