./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0adf73b7dd596c46d6accaa4759d997d536c99cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:26:50,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:26:50,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:26:50,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:26:50,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:26:50,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:26:50,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:26:50,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:26:50,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:26:50,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:26:50,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:26:50,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:26:50,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:26:50,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:26:50,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:26:50,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:26:50,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:26:50,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:26:50,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:26:50,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:26:50,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:26:50,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:26:50,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:26:50,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:26:50,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:26:50,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:26:50,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:26:50,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:26:50,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:26:50,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:26:50,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:26:50,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:26:50,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:26:50,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:26:50,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:26:50,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:26:50,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:26:50,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:26:50,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:26:50,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:26:50,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:26:50,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:26:50,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:26:50,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:26:50,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:26:50,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:26:50,399 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:26:50,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:26:50,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:26:50,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:26:50,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:26:50,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:26:50,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:26:50,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:26:50,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:26:50,404 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:26:50,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:26:50,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:26:50,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:26:50,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:26:50,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:26:50,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:26:50,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:50,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:26:50,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:26:50,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:26:50,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:26:50,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:26:50,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:26:50,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:26:50,415 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_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2021-10-11 00:26:50,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:50,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:50,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:50,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:50,830 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:50,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-11 00:26:50,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/data/8320eb419/71845f41c84e4e86a44ffd2746c9e72c/FLAG539abcb60 [2021-10-11 00:26:51,532 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:26:51,533 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-11 00:26:51,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/data/8320eb419/71845f41c84e4e86a44ffd2746c9e72c/FLAG539abcb60 [2021-10-11 00:26:51,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/data/8320eb419/71845f41c84e4e86a44ffd2746c9e72c [2021-10-11 00:26:51,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:26:51,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:26:51,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:51,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:26:51,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:26:51,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:51" (1/1) ... [2021-10-11 00:26:51,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f88abdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:51, skipping insertion in model container [2021-10-11 00:26:51,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:51" (1/1) ... [2021-10-11 00:26:51,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:26:51,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:26:52,305 WARN L226 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_81b32a1d-15ac-433c-992b-8dc95a18d1a3/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-11 00:26:52,318 WARN L226 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_81b32a1d-15ac-433c-992b-8dc95a18d1a3/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-11 00:26:52,326 WARN L226 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_81b32a1d-15ac-433c-992b-8dc95a18d1a3/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-11 00:26:52,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:52,342 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:26:52,401 WARN L226 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_81b32a1d-15ac-433c-992b-8dc95a18d1a3/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-11 00:26:52,402 WARN L226 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_81b32a1d-15ac-433c-992b-8dc95a18d1a3/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-11 00:26:52,405 WARN L226 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_81b32a1d-15ac-433c-992b-8dc95a18d1a3/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-11 00:26:52,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:52,482 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:26:52,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52 WrapperNode [2021-10-11 00:26:52,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:52,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:52,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:26:52,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:26:52,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:52,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:26:52,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:26:52,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:26:52,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... [2021-10-11 00:26:52,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:26:52,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:26:52,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:26:52,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:26:52,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:26:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:26:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:26:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 00:26:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:26:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 00:26:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:26:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:26:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:26:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:26:53,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:26:53,267 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 00:26:53,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:53 BoogieIcfgContainer [2021-10-11 00:26:53,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:26:53,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:26:53,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:26:53,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:26:53,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:26:51" (1/3) ... [2021-10-11 00:26:53,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58228426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:53, skipping insertion in model container [2021-10-11 00:26:53,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:52" (2/3) ... [2021-10-11 00:26:53,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58228426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:53, skipping insertion in model container [2021-10-11 00:26:53,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:53" (3/3) ... [2021-10-11 00:26:53,286 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-11 00:26:53,305 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:26:53,309 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:26:53,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:26:53,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:26:53,380 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:26:53,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:26:53,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:26:53,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:26:53,381 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:26:53,382 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:26:53,382 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:26:53,401 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-10-11 00:26:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:26:53,408 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:53,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:26:53,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2021-10-11 00:26:53,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:53,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808676754] [2021-10-11 00:26:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:53,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808676754] [2021-10-11 00:26:53,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:53,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:26:53,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592009073] [2021-10-11 00:26:53,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:26:53,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:26:53,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:26:53,701 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2021-10-11 00:26:53,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:53,727 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2021-10-11 00:26:53,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:26:53,729 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 00:26:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:53,747 INFO L225 Difference]: With dead ends: 53 [2021-10-11 00:26:53,747 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:26:53,752 INFO L677 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 [2021-10-11 00:26:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:26:53,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 00:26:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:26:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-11 00:26:53,795 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2021-10-11 00:26:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:53,796 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-11 00:26:53,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:26:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-11 00:26:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:26:53,798 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:53,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:53,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:26:53,799 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2021-10-11 00:26:53,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:53,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593651476] [2021-10-11 00:26:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:53,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593651476] [2021-10-11 00:26:53,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:53,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:26:53,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188054210] [2021-10-11 00:26:53,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:53,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:53,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:53,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:53,959 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2021-10-11 00:26:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:54,049 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-10-11 00:26:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:26:54,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:26:54,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:54,052 INFO L225 Difference]: With dead ends: 31 [2021-10-11 00:26:54,052 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 00:26:54,053 INFO L677 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 [2021-10-11 00:26:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 00:26:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-10-11 00:26:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 00:26:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-10-11 00:26:54,065 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2021-10-11 00:26:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:54,065 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-10-11 00:26:54,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:54,066 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-10-11 00:26:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:26:54,067 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:54,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:54,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:26:54,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:54,069 INFO L82 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2021-10-11 00:26:54,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:54,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652268440] [2021-10-11 00:26:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:54,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652268440] [2021-10-11 00:26:54,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:54,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:26:54,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156123235] [2021-10-11 00:26:54,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:26:54,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:54,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:26:54,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:54,240 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2021-10-11 00:26:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:54,391 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-10-11 00:26:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:26:54,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:26:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:54,393 INFO L225 Difference]: With dead ends: 47 [2021-10-11 00:26:54,393 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 00:26:54,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:26:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 00:26:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2021-10-11 00:26:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 00:26:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-11 00:26:54,401 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2021-10-11 00:26:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:54,402 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-11 00:26:54,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:26:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-11 00:26:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:26:54,403 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:54,403 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:54,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:26:54,404 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:54,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:54,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2021-10-11 00:26:54,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:54,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25820220] [2021-10-11 00:26:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:54,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25820220] [2021-10-11 00:26:54,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445872617] [2021-10-11 00:26:54,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:54,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-11 00:26:54,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:54,842 INFO L382 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 [2021-10-11 00:26:54,843 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:26:54,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:54,864 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-11 00:26:54,866 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 00:26:54,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:54,879 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:26:54,880 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:21 [2021-10-11 00:26:55,016 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,017 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2021-10-11 00:26:55,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:26:55,038 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:26:55,063 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,076 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 00:26:55,093 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 00:26:55,105 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2021-10-11 00:26:55,109 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-11 00:26:55,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,125 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:26:55,126 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2021-10-11 00:26:55,228 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,229 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-10-11 00:26:55,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:26:55,234 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:26:55,238 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:26:55,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,269 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_24|, |v_#memory_int_25|], 4=[|v_#memory_int_27|]} [2021-10-11 00:26:55,275 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 00:26:55,297 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,306 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 00:26:55,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 00:26:55,366 INFO L348 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2021-10-11 00:26:55,367 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2021-10-11 00:26:55,373 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-11 00:26:55,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,442 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-10-11 00:26:55,443 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2021-10-11 00:26:55,751 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-10-11 00:26:55,761 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:26:55,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:26:55,773 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:26:55,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2021-10-11 00:26:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:55,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:26:55,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-11 00:26:55,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562510426] [2021-10-11 00:26:55,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:26:55,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:55,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:26:55,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:26:55,787 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 11 states. [2021-10-11 00:27:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:00,620 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2021-10-11 00:27:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:27:00,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2021-10-11 00:27:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:00,622 INFO L225 Difference]: With dead ends: 60 [2021-10-11 00:27:00,622 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 00:27:00,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:27:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 00:27:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 19. [2021-10-11 00:27:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:27:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-10-11 00:27:00,629 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2021-10-11 00:27:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:00,629 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-10-11 00:27:00,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:27:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-10-11 00:27:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:27:00,640 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:00,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:00,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:00,857 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash -839217458, now seen corresponding path program 1 times [2021-10-11 00:27:00,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:00,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335704891] [2021-10-11 00:27:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:00,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335704891] [2021-10-11 00:27:00,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:00,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:27:00,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920805032] [2021-10-11 00:27:00,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:27:00,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:00,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:27:00,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:01,000 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2021-10-11 00:27:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:01,093 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-10-11 00:27:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:01,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 00:27:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:01,105 INFO L225 Difference]: With dead ends: 35 [2021-10-11 00:27:01,105 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:27:01,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:27:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:27:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-10-11 00:27:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 00:27:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-10-11 00:27:01,117 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2021-10-11 00:27:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:01,118 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-10-11 00:27:01,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:27:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-10-11 00:27:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:27:01,119 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:01,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:01,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:27:01,120 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:01,120 INFO L82 PathProgramCache]: Analyzing trace with hash -839157876, now seen corresponding path program 1 times [2021-10-11 00:27:01,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:01,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461535052] [2021-10-11 00:27:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:01,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:01,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:01,210 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:01,211 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:27:01,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:27:01,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:27:01 BoogieIcfgContainer [2021-10-11 00:27:01,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:27:01,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:01,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:01,261 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:01,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:53" (3/4) ... [2021-10-11 00:27:01,264 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:27:01,337 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b32a1d-15ac-433c-992b-8dc95a18d1a3/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:27:01,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:01,340 INFO L168 Benchmark]: Toolchain (without parser) took 9530.57 ms. Allocated memory was 98.6 MB in the beginning and 155.2 MB in the end (delta: 56.6 MB). Free memory was 62.5 MB in the beginning and 63.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:01,340 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 71.5 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:01,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.00 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 61.9 MB in the end (delta: 386.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:01,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.16 ms. Allocated memory is still 98.6 MB. Free memory was 61.9 MB in the beginning and 59.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:01,342 INFO L168 Benchmark]: Boogie Preprocessor took 36.44 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 58.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:01,349 INFO L168 Benchmark]: RCFGBuilder took 693.36 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 58.1 MB in the beginning and 99.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:01,350 INFO L168 Benchmark]: TraceAbstraction took 7986.54 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 99.8 MB in the beginning and 66.0 MB in the end (delta: 33.8 MB). Peak memory consumption was 62.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:01,350 INFO L168 Benchmark]: Witness Printer took 77.31 ms. Allocated memory is still 155.2 MB. Free memory was 66.0 MB in the beginning and 63.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:01,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 71.5 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.00 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 61.9 MB in the end (delta: 386.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.16 ms. Allocated memory is still 98.6 MB. Free memory was 61.9 MB in the beginning and 59.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.44 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 58.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 693.36 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 58.1 MB in the beginning and 99.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7986.54 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 99.8 MB in the beginning and 66.0 MB in the end (delta: 33.8 MB). Peak memory consumption was 62.0 MB. Max. memory is 16.1 GB. * Witness Printer took 77.31 ms. Allocated memory is still 155.2 MB. Free memory was 66.0 MB in the beginning and 63.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1049]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list [L1038] COND FALSE !(!(((void*)0) != end)) [L1039] EXPR end->colour [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end [L1043] EXPR end->colour [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next [L1049] COND TRUE !(end->next) [L1049] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.8s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 152 SDslu, 231 SDs, 0 SdLazy, 249 SolverSat, 45 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, 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, 5 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 58 ConstructedInterpolants, 6 QuantifiedInterpolants, 6912 SizeOfPredicates, 10 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 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 proved your program to be incorrect! Received shutdown request...