./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.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_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/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_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/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_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/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 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:29:25,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:25,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:25,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:25,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:25,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:25,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:25,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:25,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:25,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:25,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:25,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:25,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:25,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:25,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:25,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:25,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:25,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:25,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:25,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:25,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:25,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:25,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:25,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:25,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:25,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:25,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:25,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:25,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:25,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:25,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:25,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:25,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:25,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:25,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:25,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:25,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:25,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:25,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:25,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:25,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:25,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:29:25,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:25,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:25,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:25,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:25,295 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:25,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:25,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:25,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:25,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:25,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:25,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:25,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:25,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:25,304 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:25,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:25,305 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:25,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:25,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:25,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:25,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:25,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:25,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:25,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:25,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:25,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:25,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:25,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:25,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:25,308 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_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2021-10-11 00:29:25,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:25,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:25,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:25,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:25,602 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:25,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 00:29:25,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/data/ac77221ce/35bf2339e21f47db8217e2dab181bdca/FLAG519991f55 [2021-10-11 00:29:26,207 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:26,208 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 00:29:26,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/data/ac77221ce/35bf2339e21f47db8217e2dab181bdca/FLAG519991f55 [2021-10-11 00:29:26,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/data/ac77221ce/35bf2339e21f47db8217e2dab181bdca [2021-10-11 00:29:26,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:26,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:26,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:26,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:26,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:26,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:26" (1/1) ... [2021-10-11 00:29:26,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360f5da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:26, skipping insertion in model container [2021-10-11 00:29:26,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:26" (1/1) ... [2021-10-11 00:29:26,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:26,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:26,998 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_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 00:29:27,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:27,020 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:27,075 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_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 00:29:27,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:27,104 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:27,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27 WrapperNode [2021-10-11 00:29:27,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:27,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:27,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:27,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:27,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:27,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:27,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:27,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:27,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... [2021-10-11 00:29:27,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:27,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:27,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:27,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:27,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/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 00:29:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:27,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:29:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:27,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:27,995 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:29:27,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:27 BoogieIcfgContainer [2021-10-11 00:29:27,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:27,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:27,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:28,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:28,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:26" (1/3) ... [2021-10-11 00:29:28,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235579f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:28, skipping insertion in model container [2021-10-11 00:29:28,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:27" (2/3) ... [2021-10-11 00:29:28,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235579f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:28, skipping insertion in model container [2021-10-11 00:29:28,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:27" (3/3) ... [2021-10-11 00:29:28,006 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-11 00:29:28,021 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:28,025 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:29:28,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:29:28,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:28,063 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:28,063 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:28,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:28,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:28,064 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:28,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:28,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-10-11 00:29:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:29:28,085 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:28,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:28,086 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:28,092 INFO L82 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-10-11 00:29:28,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:28,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758132195] [2021-10-11 00:29:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:28,331 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 00:29:28,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758132195] [2021-10-11 00:29:28,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:28,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:28,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211131739] [2021-10-11 00:29:28,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:28,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:28,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:28,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:28,359 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2021-10-11 00:29:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:28,409 INFO L93 Difference]: Finished difference Result 107 states and 193 transitions. [2021-10-11 00:29:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:28,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 00:29:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:28,422 INFO L225 Difference]: With dead ends: 107 [2021-10-11 00:29:28,423 INFO L226 Difference]: Without dead ends: 93 [2021-10-11 00:29:28,425 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 00:29:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-11 00:29:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-11 00:29:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-10-11 00:29:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-10-11 00:29:28,467 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-10-11 00:29:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:28,467 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-10-11 00:29:28,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-10-11 00:29:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:29:28,469 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:28,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:28,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:28,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2021-10-11 00:29:28,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:28,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470325609] [2021-10-11 00:29:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:28,541 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 00:29:28,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470325609] [2021-10-11 00:29:28,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:28,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:28,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246849388] [2021-10-11 00:29:28,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:28,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:28,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:28,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:28,545 INFO L87 Difference]: Start difference. First operand 63 states and 118 transitions. Second operand 3 states. [2021-10-11 00:29:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:28,585 INFO L93 Difference]: Finished difference Result 155 states and 291 transitions. [2021-10-11 00:29:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:28,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 00:29:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:28,588 INFO L225 Difference]: With dead ends: 155 [2021-10-11 00:29:28,588 INFO L226 Difference]: Without dead ends: 94 [2021-10-11 00:29:28,589 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 00:29:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-11 00:29:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-10-11 00:29:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-10-11 00:29:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2021-10-11 00:29:28,602 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2021-10-11 00:29:28,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:28,602 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2021-10-11 00:29:28,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:28,602 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2021-10-11 00:29:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:29:28,604 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:28,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:28,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:29:28,604 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:28,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:28,605 INFO L82 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-10-11 00:29:28,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:28,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382422066] [2021-10-11 00:29:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:28,668 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 00:29:28,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382422066] [2021-10-11 00:29:28,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:28,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:28,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663792486] [2021-10-11 00:29:28,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:28,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:28,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:28,671 INFO L87 Difference]: Start difference. First operand 92 states and 172 transitions. Second operand 3 states. [2021-10-11 00:29:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:28,697 INFO L93 Difference]: Finished difference Result 143 states and 261 transitions. [2021-10-11 00:29:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:28,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 00:29:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:28,700 INFO L225 Difference]: With dead ends: 143 [2021-10-11 00:29:28,700 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 00:29:28,701 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 00:29:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 00:29:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-10-11 00:29:28,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-10-11 00:29:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-10-11 00:29:28,719 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2021-10-11 00:29:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:28,720 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-10-11 00:29:28,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-10-11 00:29:28,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:29:28,726 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:28,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:28,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:29:28,727 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:28,728 INFO L82 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2021-10-11 00:29:28,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:28,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770484993] [2021-10-11 00:29:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:28,834 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 00:29:28,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770484993] [2021-10-11 00:29:28,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:28,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:28,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649915162] [2021-10-11 00:29:28,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:28,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:28,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:28,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:28,837 INFO L87 Difference]: Start difference. First operand 94 states and 172 transitions. Second operand 3 states. [2021-10-11 00:29:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:28,879 INFO L93 Difference]: Finished difference Result 216 states and 398 transitions. [2021-10-11 00:29:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:28,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 00:29:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:28,882 INFO L225 Difference]: With dead ends: 216 [2021-10-11 00:29:28,882 INFO L226 Difference]: Without dead ends: 127 [2021-10-11 00:29:28,883 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 00:29:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-11 00:29:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-11 00:29:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-10-11 00:29:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2021-10-11 00:29:28,899 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2021-10-11 00:29:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:28,899 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2021-10-11 00:29:28,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2021-10-11 00:29:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:29:28,901 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:28,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:28,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:29:28,901 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:28,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2021-10-11 00:29:28,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:28,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354460328] [2021-10-11 00:29:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:28,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:28,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:28,994 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:28,998 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:29:28,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:29:29,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:29:29 BoogieIcfgContainer [2021-10-11 00:29:29,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:29:29,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:29,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:29,053 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:29,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:27" (3/4) ... [2021-10-11 00:29:29,056 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:29:29,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7e8a72-3aaf-4f26-b9e9-7acff39f2b28/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:29:29,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:29,166 INFO L168 Benchmark]: Toolchain (without parser) took 2468.90 ms. Allocated memory is still 130.0 MB. Free memory was 98.0 MB in the beginning and 102.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:29,166 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 86.0 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:29,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.59 ms. Allocated memory is still 130.0 MB. Free memory was 98.0 MB in the beginning and 105.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:29,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.89 ms. Allocated memory is still 130.0 MB. Free memory was 105.2 MB in the beginning and 103.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:29,172 INFO L168 Benchmark]: Boogie Preprocessor took 30.59 ms. Allocated memory is still 130.0 MB. Free memory was 103.1 MB in the beginning and 101.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:29,172 INFO L168 Benchmark]: RCFGBuilder took 816.25 ms. Allocated memory is still 130.0 MB. Free memory was 101.8 MB in the beginning and 78.4 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:29,173 INFO L168 Benchmark]: TraceAbstraction took 1053.08 ms. Allocated memory is still 130.0 MB. Free memory was 78.0 MB in the beginning and 61.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:29,173 INFO L168 Benchmark]: Witness Printer took 104.26 ms. Allocated memory is still 130.0 MB. Free memory was 61.0 MB in the beginning and 102.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:29,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 86.0 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.59 ms. Allocated memory is still 130.0 MB. Free memory was 98.0 MB in the beginning and 105.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.89 ms. Allocated memory is still 130.0 MB. Free memory was 105.2 MB in the beginning and 103.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.59 ms. Allocated memory is still 130.0 MB. Free memory was 103.1 MB in the beginning and 101.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 816.25 ms. Allocated memory is still 130.0 MB. Free memory was 101.8 MB in the beginning and 78.4 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1053.08 ms. Allocated memory is still 130.0 MB. Free memory was 78.0 MB in the beginning and 61.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Witness Printer took 104.26 ms. Allocated memory is still 130.0 MB. Free memory was 61.0 MB in the beginning and 102.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 219]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND TRUE p4 != 0 [L101] lk4 = 1 [L104] COND TRUE p5 != 0 [L105] lk5 = 1 [L108] COND TRUE p6 != 0 [L109] lk6 = 1 [L112] COND TRUE p7 != 0 [L113] lk7 = 1 [L116] COND TRUE p8 != 0 [L117] lk8 = 1 [L120] COND TRUE p9 != 0 [L121] lk9 = 1 [L124] COND TRUE p10 != 0 [L125] lk10 = 1 [L128] COND FALSE !(p11 != 0) [L132] COND TRUE p12 != 0 [L133] lk12 = 1 [L136] COND TRUE p13 != 0 [L137] lk13 = 1 [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L219] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 282 SDslu, 286 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=4, 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, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 4440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...