./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/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 1d66a07d2a90ded112831066684eab385c0c1369 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:29:07,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:07,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:07,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:07,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:07,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:07,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:07,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:07,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:07,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:07,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:07,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:07,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:07,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:07,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:07,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:07,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:07,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:07,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:07,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:07,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:07,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:07,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:07,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:07,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:07,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:07,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:07,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:07,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:07,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:07,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:07,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:07,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:07,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:07,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:07,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:07,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:07,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:07,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:07,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:07,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:07,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:29:07,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:07,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:07,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:07,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:07,747 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:07,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:07,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:07,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:07,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:07,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:07,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:07,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:07,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:07,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:07,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:07,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:07,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:07,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:07,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:07,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:07,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:07,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:07,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:07,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:07,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:07,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:07,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:07,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:07,753 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d66a07d2a90ded112831066684eab385c0c1369 [2021-10-11 00:29:08,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:08,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:08,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:08,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:08,080 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:08,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/forester-heap/dll-token-2.i [2021-10-11 00:29:08,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/data/3123eb0f4/22793acc18ba474681c37a0c6f16e867/FLAGa52e9c430 [2021-10-11 00:29:08,641 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:08,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i [2021-10-11 00:29:08,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/data/3123eb0f4/22793acc18ba474681c37a0c6f16e867/FLAGa52e9c430 [2021-10-11 00:29:08,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/data/3123eb0f4/22793acc18ba474681c37a0c6f16e867 [2021-10-11 00:29:08,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:08,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:08,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:08,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:08,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:08,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:08" (1/1) ... [2021-10-11 00:29:08,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc6655f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:08, skipping insertion in model container [2021-10-11 00:29:08,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:08" (1/1) ... [2021-10-11 00:29:09,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:09,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:09,438 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2021-10-11 00:29:09,445 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2021-10-11 00:29:09,446 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2021-10-11 00:29:09,448 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2021-10-11 00:29:09,449 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2021-10-11 00:29:09,452 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2021-10-11 00:29:09,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:09,464 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:09,522 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2021-10-11 00:29:09,524 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2021-10-11 00:29:09,535 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2021-10-11 00:29:09,543 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2021-10-11 00:29:09,545 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2021-10-11 00:29:09,548 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_da6bdc61-c6d4-4821-a1c3-8fc72970a425/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2021-10-11 00:29:09,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:09,603 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:09,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09 WrapperNode [2021-10-11 00:29:09,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:09,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:09,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:09,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:09,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:09,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:09,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:09,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:09,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... [2021-10-11 00:29:09,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:09,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:09,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:09,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:09,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/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 00:29:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:29:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:29:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:29:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 00:29:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 00:29:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:29:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:29:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:10,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:10,460 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-11 00:29:10,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:10 BoogieIcfgContainer [2021-10-11 00:29:10,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:10,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:10,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:10,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:10,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:08" (1/3) ... [2021-10-11 00:29:10,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eed5bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:10, skipping insertion in model container [2021-10-11 00:29:10,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:09" (2/3) ... [2021-10-11 00:29:10,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eed5bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:10, skipping insertion in model container [2021-10-11 00:29:10,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:10" (3/3) ... [2021-10-11 00:29:10,474 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2021-10-11 00:29:10,488 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:10,492 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 00:29:10,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 00:29:10,544 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:10,544 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:10,544 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:10,544 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:10,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:10,545 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:10,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:10,545 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-10-11 00:29:10,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:29:10,567 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:10,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:29:10,569 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:10,576 INFO L82 PathProgramCache]: Analyzing trace with hash 890337990, now seen corresponding path program 1 times [2021-10-11 00:29:10,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:10,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97093711] [2021-10-11 00:29:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:10,797 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 00:29:10,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97093711] [2021-10-11 00:29:10,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:10,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:10,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068523050] [2021-10-11 00:29:10,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:29:10,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:10,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:29:10,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:10,820 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2021-10-11 00:29:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:10,840 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2021-10-11 00:29:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:29:10,842 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 00:29:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:10,851 INFO L225 Difference]: With dead ends: 86 [2021-10-11 00:29:10,851 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 00:29:10,854 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 00:29:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 00:29:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-11 00:29:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:29:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-11 00:29:10,890 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 6 [2021-10-11 00:29:10,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:10,891 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-11 00:29:10,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:29:10,891 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-11 00:29:10,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:29:10,892 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:10,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:29:10,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:10,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash 889571369, now seen corresponding path program 1 times [2021-10-11 00:29:10,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:10,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512903748] [2021-10-11 00:29:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,046 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 00:29:11,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512903748] [2021-10-11 00:29:11,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:11,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381122113] [2021-10-11 00:29:11,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:11,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:11,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:11,053 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2021-10-11 00:29:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,168 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-11 00:29:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:11,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 00:29:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:11,172 INFO L225 Difference]: With dead ends: 39 [2021-10-11 00:29:11,172 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 00:29:11,173 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 00:29:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 00:29:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-11 00:29:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 00:29:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-11 00:29:11,187 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2021-10-11 00:29:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,188 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-11 00:29:11,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-11 00:29:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:29:11,189 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:11,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:29:11,194 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865149, now seen corresponding path program 1 times [2021-10-11 00:29:11,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152806960] [2021-10-11 00:29:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,305 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 00:29:11,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152806960] [2021-10-11 00:29:11,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:11,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953975690] [2021-10-11 00:29:11,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:11,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:11,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:11,318 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2021-10-11 00:29:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,451 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-10-11 00:29:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:11,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:29:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:11,453 INFO L225 Difference]: With dead ends: 63 [2021-10-11 00:29:11,454 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 00:29:11,455 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 00:29:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 00:29:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2021-10-11 00:29:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 00:29:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-11 00:29:11,465 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-10-11 00:29:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,466 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-11 00:29:11,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-11 00:29:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:29:11,468 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:11,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:29:11,469 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,470 INFO L82 PathProgramCache]: Analyzing trace with hash -913382283, now seen corresponding path program 1 times [2021-10-11 00:29:11,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56139007] [2021-10-11 00:29:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,558 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 00:29:11,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56139007] [2021-10-11 00:29:11,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:29:11,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316626360] [2021-10-11 00:29:11,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:11,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:11,562 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2021-10-11 00:29:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,693 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-11 00:29:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:11,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:29:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:11,702 INFO L225 Difference]: With dead ends: 35 [2021-10-11 00:29:11,702 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 00:29:11,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 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 00:29:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 00:29:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-11 00:29:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 00:29:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-11 00:29:11,714 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12 [2021-10-11 00:29:11,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,715 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-11 00:29:11,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-11 00:29:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:29:11,716 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:11,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:29:11,718 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash -913344547, now seen corresponding path program 1 times [2021-10-11 00:29:11,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642918692] [2021-10-11 00:29:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,867 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 00:29:11,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642918692] [2021-10-11 00:29:11,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:29:11,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28366643] [2021-10-11 00:29:11,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:11,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:11,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:11,870 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2021-10-11 00:29:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:12,062 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2021-10-11 00:29:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:12,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:29:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:12,065 INFO L225 Difference]: With dead ends: 68 [2021-10-11 00:29:12,065 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 00:29:12,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 00:29:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 00:29:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-11 00:29:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-10-11 00:29:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-11 00:29:12,072 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 12 [2021-10-11 00:29:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:12,072 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-11 00:29:12,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-11 00:29:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:29:12,073 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:12,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:12,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:29:12,073 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash -313255267, now seen corresponding path program 1 times [2021-10-11 00:29:12,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:12,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761539326] [2021-10-11 00:29:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:12,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:12,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:12,183 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:12,183 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:29:12,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:29:12,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:29:12 BoogieIcfgContainer [2021-10-11 00:29:12,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:29:12,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:12,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:12,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:12,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:10" (3/4) ... [2021-10-11 00:29:12,255 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:29:12,294 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6bdc61-c6d4-4821-a1c3-8fc72970a425/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:29:12,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:12,296 INFO L168 Benchmark]: Toolchain (without parser) took 3316.94 ms. Allocated memory was 130.0 MB in the beginning and 172.0 MB in the end (delta: 41.9 MB). Free memory was 90.4 MB in the beginning and 142.4 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:12,296 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 130.0 MB. Free memory was 108.6 MB in the beginning and 108.6 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:12,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.80 ms. Allocated memory is still 130.0 MB. Free memory was 90.2 MB in the beginning and 91.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:12,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 130.0 MB. Free memory was 91.7 MB in the beginning and 89.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:12,298 INFO L168 Benchmark]: Boogie Preprocessor took 43.86 ms. Allocated memory is still 130.0 MB. Free memory was 89.7 MB in the beginning and 88.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:12,299 INFO L168 Benchmark]: RCFGBuilder took 766.77 ms. Allocated memory is still 130.0 MB. Free memory was 88.1 MB in the beginning and 63.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:12,300 INFO L168 Benchmark]: TraceAbstraction took 1787.11 ms. Allocated memory was 130.0 MB in the beginning and 172.0 MB in the end (delta: 41.9 MB). Free memory was 63.3 MB in the beginning and 144.5 MB in the end (delta: -81.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:12,300 INFO L168 Benchmark]: Witness Printer took 41.94 ms. Allocated memory is still 172.0 MB. Free memory was 144.5 MB in the beginning and 142.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:12,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 130.0 MB. Free memory was 108.6 MB in the beginning and 108.6 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 622.80 ms. Allocated memory is still 130.0 MB. Free memory was 90.2 MB in the beginning and 91.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 130.0 MB. Free memory was 91.7 MB in the beginning and 89.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.86 ms. Allocated memory is still 130.0 MB. Free memory was 89.7 MB in the beginning and 88.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 766.77 ms. Allocated memory is still 130.0 MB. Free memory was 88.1 MB in the beginning and 63.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1787.11 ms. Allocated memory was 130.0 MB in the beginning and 172.0 MB in the end (delta: 41.9 MB). Free memory was 63.3 MB in the beginning and 144.5 MB in the end (delta: -81.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. * Witness Printer took 41.94 ms. Allocated memory is still 172.0 MB. Free memory was 144.5 MB in the beginning and 142.4 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: 1037]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 91 SDslu, 179 SDs, 0 SdLazy, 152 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...