./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 84f62959dc20df3dcecaea8b03619fc02cb1358b .................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-20ed64e [2021-08-26 02:30:04,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:30:04,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:30:04,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:30:04,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:30:04,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:30:04,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:30:04,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:30:04,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:30:04,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:30:04,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:30:04,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:30:04,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:30:04,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:30:04,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:30:04,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:30:04,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:30:04,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:30:04,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:30:04,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:30:04,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:30:04,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:30:04,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:30:04,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:30:04,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:30:04,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:30:04,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:30:04,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:30:04,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:30:04,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:30:04,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:30:04,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:30:04,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:30:04,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:30:04,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:30:04,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:30:04,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:30:04,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:30:04,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:30:04,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:30:04,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:30:04,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:30:04,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:30:04,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:30:04,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:30:04,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:30:04,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:30:04,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:30:04,131 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:30:04,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:30:04,131 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:30:04,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:30:04,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:30:04,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:30:04,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:30:04,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:30:04,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:30:04,133 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:30:04,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:30:04,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:30:04,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:30:04,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:30:04,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:30:04,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:30:04,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:30:04,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:30:04,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:30:04,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:30:04,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:30:04,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:30:04,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:30:04,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:30:04,135 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84f62959dc20df3dcecaea8b03619fc02cb1358b [2021-08-26 02:30:04,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:30:04,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:30:04,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:30:04,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:30:04,429 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:30:04,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2021-08-26 02:30:04,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2451e4eda/a4986876d1a54444aeffc122c41cfbdf/FLAG976e840b6 [2021-08-26 02:30:04,901 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:30:04,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2021-08-26 02:30:04,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2451e4eda/a4986876d1a54444aeffc122c41cfbdf/FLAG976e840b6 [2021-08-26 02:30:04,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2451e4eda/a4986876d1a54444aeffc122c41cfbdf [2021-08-26 02:30:04,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:30:04,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:30:04,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:30:04,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:30:04,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:30:04,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:30:04" (1/1) ... [2021-08-26 02:30:04,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442e9385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:04, skipping insertion in model container [2021-08-26 02:30:04,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:30:04" (1/1) ... [2021-08-26 02:30:04,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:30:04,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:30:05,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-08-26 02:30:05,294 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-08-26 02:30:05,296 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-08-26 02:30:05,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:30:05,305 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:30:05,347 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-08-26 02:30:05,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-08-26 02:30:05,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-08-26 02:30:05,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:30:05,369 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:30:05,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05 WrapperNode [2021-08-26 02:30:05,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:30:05,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:30:05,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:30:05,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:30:05,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:30:05,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:30:05,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:30:05,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:30:05,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:30:05,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:30:05,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:30:05,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:30:05,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (1/1) ... [2021-08-26 02:30:05,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:30:05,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:30:05,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 02:30:05,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 02:30:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:30:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:30:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-26 02:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:30:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:30:06,229 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:30:06,229 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-08-26 02:30:06,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:30:06 BoogieIcfgContainer [2021-08-26 02:30:06,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:30:06,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:30:06,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:30:06,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:30:06,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:30:04" (1/3) ... [2021-08-26 02:30:06,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dff05e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:30:06, skipping insertion in model container [2021-08-26 02:30:06,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:30:05" (2/3) ... [2021-08-26 02:30:06,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dff05e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:30:06, skipping insertion in model container [2021-08-26 02:30:06,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:30:06" (3/3) ... [2021-08-26 02:30:06,238 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2021-08-26 02:30:06,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:30:06,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-08-26 02:30:06,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:30:06,289 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:30:06,289 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-26 02:30:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 82 states have (on average 1.4878048780487805) internal successors, (122), 87 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 02:30:06,308 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:30:06,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:30:06,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 02:30:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:30:06,313 INFO L82 PathProgramCache]: Analyzing trace with hash 912087840, now seen corresponding path program 1 times [2021-08-26 02:30:06,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:30:06,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171247815] [2021-08-26 02:30:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:30:06,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:30:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:30:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:30:06,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:30:06,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171247815] [2021-08-26 02:30:06,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171247815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:30:06,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:30:06,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 02:30:06,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640018988] [2021-08-26 02:30:06,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 02:30:06,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:30:06,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 02:30:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 02:30:06,479 INFO L87 Difference]: Start difference. First operand has 88 states, 82 states have (on average 1.4878048780487805) internal successors, (122), 87 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:30:06,501 INFO L93 Difference]: Finished difference Result 172 states and 239 transitions. [2021-08-26 02:30:06,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 02:30:06,502 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 02:30:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:30:06,509 INFO L225 Difference]: With dead ends: 172 [2021-08-26 02:30:06,510 INFO L226 Difference]: Without dead ends: 84 [2021-08-26 02:30:06,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 02:30:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-26 02:30:06,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-08-26 02:30:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 83 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2021-08-26 02:30:06,546 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 14 [2021-08-26 02:30:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:30:06,547 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2021-08-26 02:30:06,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2021-08-26 02:30:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 02:30:06,548 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:30:06,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:30:06,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:30:06,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 02:30:06,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:30:06,550 INFO L82 PathProgramCache]: Analyzing trace with hash 793647061, now seen corresponding path program 1 times [2021-08-26 02:30:06,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:30:06,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248480831] [2021-08-26 02:30:06,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:30:06,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:30:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:30:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:30:06,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:30:06,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248480831] [2021-08-26 02:30:06,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248480831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:30:06,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:30:06,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:30:06,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888463698] [2021-08-26 02:30:06,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:30:06,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:30:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:30:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:30:06,635 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:30:06,712 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2021-08-26 02:30:06,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:30:06,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 02:30:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:30:06,713 INFO L225 Difference]: With dead ends: 135 [2021-08-26 02:30:06,713 INFO L226 Difference]: Without dead ends: 131 [2021-08-26 02:30:06,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:30:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-26 02:30:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2021-08-26 02:30:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 87 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2021-08-26 02:30:06,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 14 [2021-08-26 02:30:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:30:06,721 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2021-08-26 02:30:06,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2021-08-26 02:30:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 02:30:06,721 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:30:06,721 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:30:06,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 02:30:06,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 02:30:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:30:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash 795255775, now seen corresponding path program 1 times [2021-08-26 02:30:06,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:30:06,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064193069] [2021-08-26 02:30:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:30:06,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:30:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:30:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:30:06,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:30:06,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064193069] [2021-08-26 02:30:06,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064193069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:30:06,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:30:06,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:30:06,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626702246] [2021-08-26 02:30:06,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:30:06,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:30:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:30:06,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:30:06,824 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:30:07,019 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2021-08-26 02:30:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:30:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 02:30:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:30:07,022 INFO L225 Difference]: With dead ends: 219 [2021-08-26 02:30:07,022 INFO L226 Difference]: Without dead ends: 140 [2021-08-26 02:30:07,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:30:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-26 02:30:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2021-08-26 02:30:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 100 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2021-08-26 02:30:07,030 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 14 [2021-08-26 02:30:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:30:07,030 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2021-08-26 02:30:07,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:30:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2021-08-26 02:30:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 02:30:07,031 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:30:07,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:30:07,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 02:30:07,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 02:30:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:30:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1115638045, now seen corresponding path program 1 times [2021-08-26 02:30:07,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:30:07,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774700277] [2021-08-26 02:30:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:30:07,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:30:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 02:30:07,070 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 02:30:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 02:30:07,142 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 02:30:07,143 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 02:30:07,144 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:30:07,145 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:30:07,146 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:30:07,146 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:30:07,146 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:30:07,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 02:30:07,150 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:30:07,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:30:07 BoogieIcfgContainer [2021-08-26 02:30:07,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:30:07,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:30:07,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:30:07,191 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:30:07,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:30:06" (3/4) ... [2021-08-26 02:30:07,193 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 02:30:07,227 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 02:30:07,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:30:07,228 INFO L168 Benchmark]: Toolchain (without parser) took 2295.04 ms. Allocated memory was 60.8 MB in the beginning and 96.5 MB in the end (delta: 35.7 MB). Free memory was 38.2 MB in the beginning and 64.3 MB in the end (delta: -26.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-08-26 02:30:07,228 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:30:07,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.34 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 35.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:30:07,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.70 ms. Allocated memory is still 60.8 MB. Free memory was 35.1 MB in the beginning and 31.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 02:30:07,229 INFO L168 Benchmark]: Boogie Preprocessor took 57.59 ms. Allocated memory is still 60.8 MB. Free memory was 31.9 MB in the beginning and 28.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:30:07,229 INFO L168 Benchmark]: RCFGBuilder took 743.51 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 28.6 MB in the beginning and 52.7 MB in the end (delta: -24.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-08-26 02:30:07,230 INFO L168 Benchmark]: TraceAbstraction took 958.55 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 69.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2021-08-26 02:30:07,230 INFO L168 Benchmark]: Witness Printer took 35.57 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 64.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 02:30:07,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 435.34 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 35.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.70 ms. Allocated memory is still 60.8 MB. Free memory was 35.1 MB in the beginning and 31.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.59 ms. Allocated memory is still 60.8 MB. Free memory was 31.9 MB in the beginning and 28.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 743.51 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 28.6 MB in the beginning and 52.7 MB in the end (delta: -24.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 958.55 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 69.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. * Witness Printer took 35.57 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 64.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; VAL [mutexes={6:0}] [L576] void *ptr = malloc(size); [L565] COND FALSE !(!cond) VAL [mutexes={6:0}] [L578] return ptr; VAL [mutexes={6:0}] [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L576] void *ptr = malloc(size); [L565] COND FALSE !(!cond) VAL [mutexes={6:0}] [L578] return ptr; VAL [mutexes={6:0}] [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [mutexes={6:0}] [L655] COND FALSE !(&m->list != (s)) VAL [mutexes={6:0}] [L660] return 0; VAL [mutexes={6:0}] [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [mutexes={6:0}] [L655] COND FALSE !(&m->list != (s)) VAL [mutexes={6:0}] [L660] return 0; VAL [mutexes={6:0}] [L636] COND TRUE !ldv_is_in_set(new, s) [L637] struct ldv_list_element *le; [L576] void *ptr = malloc(size); [L565] COND FALSE !(!cond) VAL [mutexes={6:0}] [L578] return ptr; VAL [mutexes={6:0}] [L638] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L639] le->e = new [L608] head->next [L596] next->prev = new [L597] new->next = next [L598] new->prev = prev [L599] prev->next = new VAL [mutexes={6:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [mutexes={6:0}] [L655] COND TRUE &m->list != (s) [L656] EXPR m->e VAL [mutexes={6:0}] [L656] COND TRUE m->e == e [L657] return 1; VAL [mutexes={6:0}] [L669] COND TRUE ldv_is_in_set(m, &mutexes) [L669] reach_error() VAL [mutexes={6:0}] - UnprovableResult [Line: 669]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 673]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 673]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 867.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 325.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 266 SDtfs, 165 SDslu, 281 SDs, 0 SdLazy, 105 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 156.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=3, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 37.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 82 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.9ms SsaConstructionTime, 90.4ms SatisfiabilityAnalysisTime, 186.3ms InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-08-26 02:30:07,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...