./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-regression/mutex_lock_struct.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 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:27:34,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:27:34,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:27:34,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:27:34,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:27:34,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:27:34,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:27:34,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:27:34,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:27:34,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:27:34,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:27:34,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:27:34,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:27:34,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:27:34,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:27:34,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:27:34,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:27:34,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:27:34,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:27:34,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:27:34,104 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:27:34,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:27:34,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:27:34,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:27:34,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:27:34,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:27:34,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:27:34,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:27:34,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:27:34,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:27:34,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:27:34,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:27:34,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:27:34,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:27:34,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:27:34,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:27:34,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:27:34,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:27:34,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:27:34,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:27:34,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:27:34,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:27:34,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 14:27:34,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:27:34,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:27:34,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:27:34,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:27:34,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:27:34,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:27:34,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:27:34,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:27:34,152 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:27:34,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:27:34,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:27:34,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 14:27:34,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:27:34,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:27:34,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:27:34,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:27:34,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:27:34,154 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:27:34,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:27:34,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:27:34,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:27:34,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:27:34,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:27:34,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:27:34,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:27:34,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:27:34,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:27:34,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:27:34,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 14:27:34,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 14:27:34,157 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:27:34,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:27:34,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:27:34,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 [2022-07-19 14:27:34,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:27:34,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:27:34,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:27:34,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:27:34,420 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:27:34,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-07-19 14:27:34,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb67103e/fc1402a623a74016aa47d5c74a7aeec3/FLAG4a8909990 [2022-07-19 14:27:34,855 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:27:34,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-07-19 14:27:34,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb67103e/fc1402a623a74016aa47d5c74a7aeec3/FLAG4a8909990 [2022-07-19 14:27:34,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb67103e/fc1402a623a74016aa47d5c74a7aeec3 [2022-07-19 14:27:34,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:27:34,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:27:34,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:27:34,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:27:34,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:27:34,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:27:34" (1/1) ... [2022-07-19 14:27:34,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d60a2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:34, skipping insertion in model container [2022-07-19 14:27:34,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:27:34" (1/1) ... [2022-07-19 14:27:34,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:27:34,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:27:35,064 WARN L230 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-regression/mutex_lock_struct.i[295,308] [2022-07-19 14:27:35,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:27:35,099 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:27:35,109 WARN L230 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-regression/mutex_lock_struct.i[295,308] [2022-07-19 14:27:35,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:27:35,121 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:27:35,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35 WrapperNode [2022-07-19 14:27:35,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:27:35,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:27:35,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:27:35,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:27:35,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,147 INFO L137 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-07-19 14:27:35,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:27:35,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:27:35,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:27:35,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:27:35,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:27:35,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:27:35,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:27:35,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:27:35,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (1/1) ... [2022-07-19 14:27:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:27:35,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:27:35,212 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) [2022-07-19 14:27:35,235 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 [2022-07-19 14:27:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:27:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-07-19 14:27:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-07-19 14:27:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 14:27:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 14:27:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 14:27:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 14:27:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 14:27:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:27:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:27:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 14:27:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 14:27:35,303 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:27:35,304 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:27:35,376 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:27:35,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:27:35,380 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 14:27:35,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:27:35 BoogieIcfgContainer [2022-07-19 14:27:35,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:27:35,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:27:35,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:27:35,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:27:35,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:27:34" (1/3) ... [2022-07-19 14:27:35,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683f36cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:27:35, skipping insertion in model container [2022-07-19 14:27:35,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:35" (2/3) ... [2022-07-19 14:27:35,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683f36cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:27:35, skipping insertion in model container [2022-07-19 14:27:35,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:27:35" (3/3) ... [2022-07-19 14:27:35,387 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2022-07-19 14:27:35,397 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:27:35,398 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 14:27:35,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:27:35,439 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73a2da4b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@380a3560 [2022-07-19 14:27:35,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 14:27:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 14:27:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 14:27:35,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:27:35,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:27:35,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:27:35,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:27:35,452 INFO L85 PathProgramCache]: Analyzing trace with hash 847153890, now seen corresponding path program 1 times [2022-07-19 14:27:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:27:35,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945243883] [2022-07-19 14:27:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:27:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:27:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:27:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:27:35,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:27:35,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945243883] [2022-07-19 14:27:35,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945243883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:27:35,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:27:35,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 14:27:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831250989] [2022-07-19 14:27:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:27:35,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 14:27:35,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:27:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 14:27:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:27:35,673 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:27:35,744 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-07-19 14:27:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 14:27:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 14:27:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:27:35,749 INFO L225 Difference]: With dead ends: 34 [2022-07-19 14:27:35,750 INFO L226 Difference]: Without dead ends: 14 [2022-07-19 14:27:35,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:27:35,753 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:27:35,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 14:27:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-19 14:27:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-19 14:27:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:27:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-07-19 14:27:35,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 7 [2022-07-19 14:27:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:27:35,781 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-07-19 14:27:35,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-07-19 14:27:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 14:27:35,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:27:35,783 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:27:35,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 14:27:35,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:27:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:27:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1741455158, now seen corresponding path program 1 times [2022-07-19 14:27:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:27:35,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476289295] [2022-07-19 14:27:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:27:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:27:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 14:27:35,838 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 14:27:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 14:27:35,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 14:27:35,871 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 14:27:35,873 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 14:27:35,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 14:27:35,877 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 14:27:35,881 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 14:27:35,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 02:27:35 BoogieIcfgContainer [2022-07-19 14:27:35,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 14:27:35,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 14:27:35,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 14:27:35,908 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 14:27:35,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:27:35" (3/4) ... [2022-07-19 14:27:35,910 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 14:27:35,954 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 14:27:35,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 14:27:35,955 INFO L158 Benchmark]: Toolchain (without parser) took 1079.09ms. Allocated memory is still 109.1MB. Free memory was 69.5MB in the beginning and 85.4MB in the end (delta: -15.8MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-07-19 14:27:35,956 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory was 85.8MB in the beginning and 85.7MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:27:35,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.39ms. Allocated memory is still 109.1MB. Free memory was 69.4MB in the beginning and 84.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 14:27:35,956 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.04ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 82.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:27:35,958 INFO L158 Benchmark]: Boogie Preprocessor took 29.01ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 81.9MB in the end (delta: 846.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:27:35,958 INFO L158 Benchmark]: RCFGBuilder took 203.48ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 73.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 14:27:35,958 INFO L158 Benchmark]: TraceAbstraction took 523.83ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 44.9MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-07-19 14:27:35,959 INFO L158 Benchmark]: Witness Printer took 47.39ms. Allocated memory is still 109.1MB. Free memory was 44.9MB in the beginning and 85.4MB in the end (delta: -40.4MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-07-19 14:27:35,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory was 85.8MB in the beginning and 85.7MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.39ms. Allocated memory is still 109.1MB. Free memory was 69.4MB in the beginning and 84.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.04ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 82.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.01ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 81.9MB in the end (delta: 846.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.48ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 73.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 523.83ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 44.9MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 47.39ms. Allocated memory is still 109.1MB. Free memory was 44.9MB in the beginning and 85.4MB in the end (delta: -40.4MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L35] struct mutex m; [L36] m.is_locked = 0 VAL [m={5:0}] [L38] CALL mutex_lock(&m) VAL [a={5:0}] [L23] EXPR a->is_locked VAL [a={5:0}, a={5:0}, a->is_locked=0] [L23] COND FALSE !(a->is_locked == 1) [L24] a->is_locked = 1 VAL [a={5:0}, a={5:0}] [L38] RET mutex_lock(&m) VAL [m={5:0}] [L42] CALL mutex_lock(&m) VAL [a={5:0}] [L23] EXPR a->is_locked VAL [a={5:0}, a={5:0}, a->is_locked=1] [L23] COND TRUE a->is_locked == 1 [L23] CALL err() [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 13 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-07-19 14:27:36,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE