./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/stateful_check.c --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_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/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_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/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_c0b87f89-4d20-4ac9-8712-e949b86b1243/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 a342581b7572d5ebcb4a58d0a914c795d7fcf5cd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:24:24,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:24:24,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:24:24,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:24:24,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:24:24,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:24:24,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:24:24,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:24:24,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:24:24,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:24:24,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:24:24,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:24:24,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:24:24,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:24:24,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:24:24,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:24:24,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:24:24,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:24:24,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:24:24,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:24:24,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:24:24,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:24:24,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:24:24,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:24:24,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:24:24,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:24:24,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:24:24,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:24:24,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:24:24,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:24:24,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:24:24,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:24:24,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:24:24,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:24:24,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:24:24,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:24:24,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:24:24,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:24:24,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:24:24,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:24:24,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:24:24,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:24:24,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:24:24,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:24:24,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:24:24,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:24:24,200 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:24:24,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:24:24,201 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:24:24,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:24:24,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:24:24,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:24:24,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:24:24,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:24:24,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:24:24,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:24:24,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:24:24,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:24:24,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:24:24,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:24:24,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:24:24,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:24:24,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:24,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:24:24,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:24:24,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:24:24,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:24:24,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:24:24,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:24:24,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:24:24,207 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_c0b87f89-4d20-4ac9-8712-e949b86b1243/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a342581b7572d5ebcb4a58d0a914c795d7fcf5cd [2021-10-11 00:24:24,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:24:24,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:24:24,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:24:24,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:24:24,492 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:24:24,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2021-10-11 00:24:24,579 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/data/d8d0c1ce3/abf202d9b88c42c08bcf444f24c3addf/FLAG5e92ecc62 [2021-10-11 00:24:25,101 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:24:25,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/sv-benchmarks/c/ldv-regression/stateful_check.c [2021-10-11 00:24:25,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/data/d8d0c1ce3/abf202d9b88c42c08bcf444f24c3addf/FLAG5e92ecc62 [2021-10-11 00:24:25,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/data/d8d0c1ce3/abf202d9b88c42c08bcf444f24c3addf [2021-10-11 00:24:25,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:24:25,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:24:25,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:25,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:24:25,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:24:25,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4458ebd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25, skipping insertion in model container [2021-10-11 00:24:25,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:24:25,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:24:25,695 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_c0b87f89-4d20-4ac9-8712-e949b86b1243/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2021-10-11 00:24:25,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:25,758 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:24:25,776 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_c0b87f89-4d20-4ac9-8712-e949b86b1243/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2021-10-11 00:24:25,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:25,819 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:24:25,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25 WrapperNode [2021-10-11 00:24:25,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:25,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:25,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:24:25,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:24:25,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:25,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:24:25,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:24:25,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:24:25,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... [2021-10-11 00:24:25,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:24:25,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:24:25,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:24:25,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:24:25,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/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 00:24:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:24:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:24:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:24:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:24:26,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:24:26,247 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-10-11 00:24:26,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:26 BoogieIcfgContainer [2021-10-11 00:24:26,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:24:26,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:24:26,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:24:26,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:24:26,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:24:25" (1/3) ... [2021-10-11 00:24:26,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e2205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:26, skipping insertion in model container [2021-10-11 00:24:26,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:25" (2/3) ... [2021-10-11 00:24:26,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e2205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:26, skipping insertion in model container [2021-10-11 00:24:26,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:26" (3/3) ... [2021-10-11 00:24:26,259 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2021-10-11 00:24:26,273 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:24:26,277 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-10-11 00:24:26,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 00:24:26,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:24:26,318 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:24:26,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:24:26,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:24:26,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:24:26,319 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:24:26,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:24:26,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:24:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-10-11 00:24:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:24:26,379 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:26,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:24:26,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 889605129, now seen corresponding path program 1 times [2021-10-11 00:24:26,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:26,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367191372] [2021-10-11 00:24:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:26,583 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 00:24:26,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367191372] [2021-10-11 00:24:26,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:26,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:24:26,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431718072] [2021-10-11 00:24:26,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:24:26,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:26,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:24:26,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:24:26,614 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2021-10-11 00:24:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:26,644 INFO L93 Difference]: Finished difference Result 89 states and 123 transitions. [2021-10-11 00:24:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:24:26,647 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 00:24:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:26,663 INFO L225 Difference]: With dead ends: 89 [2021-10-11 00:24:26,663 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 00:24:26,669 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 00:24:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 00:24:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-11 00:24:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 00:24:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2021-10-11 00:24:26,718 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 6 [2021-10-11 00:24:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:26,718 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2021-10-11 00:24:26,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:24:26,720 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2021-10-11 00:24:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:24:26,720 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:26,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:26,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:24:26,721 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:26,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:26,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1804046918, now seen corresponding path program 1 times [2021-10-11 00:24:26,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:26,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518948013] [2021-10-11 00:24:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:26,869 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 00:24:26,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518948013] [2021-10-11 00:24:26,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:26,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:24:26,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037677881] [2021-10-11 00:24:26,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:26,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:26,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:26,872 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 3 states. [2021-10-11 00:24:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:26,945 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2021-10-11 00:24:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:26,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 00:24:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:26,948 INFO L225 Difference]: With dead ends: 70 [2021-10-11 00:24:26,949 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 00:24:26,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:26,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 00:24:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-11 00:24:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-10-11 00:24:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2021-10-11 00:24:26,971 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 7 [2021-10-11 00:24:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:26,971 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2021-10-11 00:24:26,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2021-10-11 00:24:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:24:26,974 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:26,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:26,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:24:26,975 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:26,978 INFO L82 PathProgramCache]: Analyzing trace with hash -147365405, now seen corresponding path program 1 times [2021-10-11 00:24:26,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:26,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346813889] [2021-10-11 00:24:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:27,069 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 00:24:27,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346813889] [2021-10-11 00:24:27,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:27,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:24:27,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085354277] [2021-10-11 00:24:27,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:27,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:27,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:27,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:27,080 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 3 states. [2021-10-11 00:24:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:27,159 INFO L93 Difference]: Finished difference Result 150 states and 212 transitions. [2021-10-11 00:24:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:27,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-10-11 00:24:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:27,164 INFO L225 Difference]: With dead ends: 150 [2021-10-11 00:24:27,166 INFO L226 Difference]: Without dead ends: 90 [2021-10-11 00:24:27,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-11 00:24:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2021-10-11 00:24:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-10-11 00:24:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2021-10-11 00:24:27,194 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 15 [2021-10-11 00:24:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:27,195 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2021-10-11 00:24:27,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2021-10-11 00:24:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:24:27,197 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:27,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:27,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:24:27,198 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:27,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1293798555, now seen corresponding path program 1 times [2021-10-11 00:24:27,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:27,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983001253] [2021-10-11 00:24:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:24:27,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983001253] [2021-10-11 00:24:27,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:27,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:24:27,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704406233] [2021-10-11 00:24:27,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:27,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:27,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:27,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:27,311 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand 3 states. [2021-10-11 00:24:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:27,351 INFO L93 Difference]: Finished difference Result 208 states and 296 transitions. [2021-10-11 00:24:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:27,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 00:24:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:27,354 INFO L225 Difference]: With dead ends: 208 [2021-10-11 00:24:27,356 INFO L226 Difference]: Without dead ends: 124 [2021-10-11 00:24:27,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:27,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-11 00:24:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2021-10-11 00:24:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-10-11 00:24:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 175 transitions. [2021-10-11 00:24:27,377 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 175 transitions. Word has length 22 [2021-10-11 00:24:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:27,378 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 175 transitions. [2021-10-11 00:24:27,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 175 transitions. [2021-10-11 00:24:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:24:27,381 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:27,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:27,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:24:27,384 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1319564790, now seen corresponding path program 1 times [2021-10-11 00:24:27,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:27,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471281359] [2021-10-11 00:24:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:27,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471281359] [2021-10-11 00:24:27,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669047057] [2021-10-11 00:24:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/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 00:24:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:27,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:27,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:27,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:27,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-11 00:24:27,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500566588] [2021-10-11 00:24:27,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:24:27,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:27,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:24:27,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:27,685 INFO L87 Difference]: Start difference. First operand 121 states and 175 transitions. Second operand 5 states. [2021-10-11 00:24:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:27,824 INFO L93 Difference]: Finished difference Result 344 states and 525 transitions. [2021-10-11 00:24:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:24:27,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-10-11 00:24:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:27,831 INFO L225 Difference]: With dead ends: 344 [2021-10-11 00:24:27,832 INFO L226 Difference]: Without dead ends: 226 [2021-10-11 00:24:27,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-11 00:24:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 217. [2021-10-11 00:24:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-10-11 00:24:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 327 transitions. [2021-10-11 00:24:27,878 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 327 transitions. Word has length 22 [2021-10-11 00:24:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:27,879 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 327 transitions. [2021-10-11 00:24:27,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:24:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 327 transitions. [2021-10-11 00:24:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 00:24:27,881 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:27,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:28,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:28,089 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:28,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1040975168, now seen corresponding path program 1 times [2021-10-11 00:24:28,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:28,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991499011] [2021-10-11 00:24:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:24:28,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991499011] [2021-10-11 00:24:28,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:28,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:28,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940973352] [2021-10-11 00:24:28,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:28,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:28,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:28,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:28,139 INFO L87 Difference]: Start difference. First operand 217 states and 327 transitions. Second operand 4 states. [2021-10-11 00:24:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:28,210 INFO L93 Difference]: Finished difference Result 629 states and 979 transitions. [2021-10-11 00:24:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:28,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2021-10-11 00:24:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:28,217 INFO L225 Difference]: With dead ends: 629 [2021-10-11 00:24:28,218 INFO L226 Difference]: Without dead ends: 415 [2021-10-11 00:24:28,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-11 00:24:28,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 313. [2021-10-11 00:24:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2021-10-11 00:24:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 487 transitions. [2021-10-11 00:24:28,255 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 487 transitions. Word has length 29 [2021-10-11 00:24:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:28,255 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 487 transitions. [2021-10-11 00:24:28,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 487 transitions. [2021-10-11 00:24:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 00:24:28,257 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:28,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:28,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:24:28,259 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:28,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1446791270, now seen corresponding path program 1 times [2021-10-11 00:24:28,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:28,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765959436] [2021-10-11 00:24:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:24:28,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:24:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:24:28,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:24:28,368 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:24:28,368 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:24:28,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:24:28,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:24:28 BoogieIcfgContainer [2021-10-11 00:24:28,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:24:28,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:24:28,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:24:28,416 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:24:28,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:26" (3/4) ... [2021-10-11 00:24:28,418 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:24:28,475 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b87f89-4d20-4ac9-8712-e949b86b1243/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:24:28,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:24:28,477 INFO L168 Benchmark]: Toolchain (without parser) took 2999.11 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.7 MB in the beginning and 58.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:28,478 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 100.7 MB. Free memory is still 59.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:28,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.75 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 75.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:28,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.93 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 74.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:28,479 INFO L168 Benchmark]: Boogie Preprocessor took 25.75 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:28,480 INFO L168 Benchmark]: RCFGBuilder took 364.64 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 55.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:28,481 INFO L168 Benchmark]: TraceAbstraction took 2163.94 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 55.0 MB in the beginning and 61.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:28,481 INFO L168 Benchmark]: Witness Printer took 60.25 ms. Allocated memory is still 121.6 MB. Free memory was 61.2 MB in the beginning and 58.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:28,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 100.7 MB. Free memory is still 59.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.75 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 75.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.93 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 74.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.75 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 364.64 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 55.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2163.94 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 55.0 MB in the beginning and 61.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 60.25 ms. Allocated memory is still 121.6 MB. Free memory was 61.2 MB in the beginning and 58.1 MB in the end (delta: 3.0 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: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; [L71] open_called = 0 [L72] return 0; VAL [ldv_mutex=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: VAL [ldv_mutex=1, open_called=0] [L83] COND TRUE ldv_s_misc_fops_file_operations==0 [L59] COND TRUE __VERIFIER_nondet_int() [L61] return 1; VAL [ldv_mutex=1, open_called=0] [L85] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: VAL [ldv_mutex=1, open_called=0] [L91] COND TRUE ldv_s_misc_fops_file_operations==1 [L54] return 0; VAL [ldv_mutex=1, open_called=0] [L93] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: VAL [ldv_mutex=1, open_called=0] [L99] COND TRUE ldv_s_misc_fops_file_operations==2 [L50] return 0; VAL [ldv_mutex=1, open_called=0] [L101] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: [L106] case 3: VAL [ldv_mutex=1, open_called=0] [L107] COND TRUE ldv_s_misc_fops_file_operations==3 [L36] COND FALSE !(\read(open_called)) VAL [ldv_mutex=1, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=1, open_called=0] [L19] ldv_mutex = 2 VAL [ldv_mutex=2, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=2, open_called=0] [L6] reach_error() VAL [ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 298 SDtfs, 164 SDslu, 289 SDs, 0 SdLazy, 92 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 117 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 14/20 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...