./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/dekker.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/pthread-atomic/dekker.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 b09e522566a82367f1e090dbdcfe12204e8a578a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:14:12,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:14:12,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:14:12,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:14:12,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:14:12,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:14:12,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:14:12,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:14:12,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:14:12,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:14:12,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:14:12,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:14:12,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:14:12,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:14:12,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:14:12,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:14:12,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:14:12,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:14:12,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:14:12,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:14:12,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:14:12,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:14:12,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:14:12,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:14:12,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:14:12,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:14:12,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:14:12,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:14:12,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:14:12,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:14:12,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:14:12,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:14:12,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:14:12,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:14:12,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:14:12,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:14:12,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:14:12,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:14:12,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:14:12,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:14:12,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:14:12,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:14:12,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:14:12,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:14:12,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:14:12,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:14:12,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:14:12,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:14:12,168 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:14:12,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:14:12,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:14:12,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:14:12,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:14:12,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:14:12,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:14:12,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:14:12,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:14:12,169 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:14:12,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:14:12,170 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:14:12,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:14:12,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:14:12,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:14:12,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:14:12,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:14:12,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:14:12,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:14:12,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:14:12,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:14:12,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:14:12,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:14:12,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:14:12,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b09e522566a82367f1e090dbdcfe12204e8a578a [2021-08-26 14:14:12,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:14:12,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:14:12,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:14:12,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:14:12,518 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:14:12,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/dekker.i [2021-08-26 14:14:12,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e834f4a/4e9a57539749461cb73267be1741828b/FLAGc62de2cb2 [2021-08-26 14:14:13,176 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:14:13,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i [2021-08-26 14:14:13,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e834f4a/4e9a57539749461cb73267be1741828b/FLAGc62de2cb2 [2021-08-26 14:14:13,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e834f4a/4e9a57539749461cb73267be1741828b [2021-08-26 14:14:13,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:14:13,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:14:13,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:14:13,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:14:13,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:14:13,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d07fa1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13, skipping insertion in model container [2021-08-26 14:14:13,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:14:13,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:14:13,756 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-26 14:14:13,847 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/pthread-atomic/dekker.i[31403,31416] [2021-08-26 14:14:13,853 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/pthread-atomic/dekker.i[32483,32496] [2021-08-26 14:14:13,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:14:13,866 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:14:13,879 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-26 14:14:13,898 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/pthread-atomic/dekker.i[31403,31416] [2021-08-26 14:14:13,901 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/pthread-atomic/dekker.i[32483,32496] [2021-08-26 14:14:13,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:14:13,935 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:14:13,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13 WrapperNode [2021-08-26 14:14:13,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:14:13,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:14:13,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:14:13,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:14:13,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:14:13,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:14:13,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:14:13,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:14:13,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:13,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:14:13,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:14:13,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:14:13,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:14:13,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (1/1) ... [2021-08-26 14:14:14,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:14:14,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:14:14,029 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 14:14:14,038 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 14:14:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 14:14:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-26 14:14:14,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-26 14:14:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-26 14:14:14,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-26 14:14:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:14:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-26 14:14:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:14:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:14:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:14:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-26 14:14:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:14:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:14:14,077 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:14:14,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:14:14,655 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-26 14:14:14,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:14:14 BoogieIcfgContainer [2021-08-26 14:14:14,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:14:14,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:14:14,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:14:14,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:14:14,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:14:13" (1/3) ... [2021-08-26 14:14:14,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b70db89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:14:14, skipping insertion in model container [2021-08-26 14:14:14,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:14:13" (2/3) ... [2021-08-26 14:14:14,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b70db89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:14:14, skipping insertion in model container [2021-08-26 14:14:14,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:14:14" (3/3) ... [2021-08-26 14:14:14,671 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-08-26 14:14:14,677 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:14:14,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:14:14,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 14:14:14,678 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:14:14,725 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,725 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,726 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,726 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,735 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,735 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,737 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,738 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:14:14,776 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-26 14:14:14,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:14:14,829 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 14:14:14,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 14:14:14,841 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:14:14,849 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 100 transitions, 216 flow [2021-08-26 14:14:14,852 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 100 transitions, 216 flow [2021-08-26 14:14:14,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 100 transitions, 216 flow [2021-08-26 14:14:14,899 INFO L129 PetriNetUnfolder]: 13/98 cut-off events. [2021-08-26 14:14:14,899 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-26 14:14:14,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 13/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-26 14:14:14,907 INFO L116 LiptonReduction]: Number of co-enabled transitions 2132 [2021-08-26 14:14:19,070 INFO L131 LiptonReduction]: Checked pairs total: 5986 [2021-08-26 14:14:19,071 INFO L133 LiptonReduction]: Total number of compositions: 81 [2021-08-26 14:14:19,078 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 41 transitions, 98 flow [2021-08-26 14:14:19,102 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 340 states, 337 states have (on average 2.827893175074184) internal successors, (953), 339 states have internal predecessors, (953), 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 14:14:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 340 states, 337 states have (on average 2.827893175074184) internal successors, (953), 339 states have internal predecessors, (953), 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 14:14:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 14:14:19,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:14:19,111 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 14:14:19,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-26 14:14:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:14:19,117 INFO L82 PathProgramCache]: Analyzing trace with hash -421701713, now seen corresponding path program 1 times [2021-08-26 14:14:19,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:14:19,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289168091] [2021-08-26 14:14:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:14:19,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:14:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:14:19,279 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 14:14:19,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:14:19,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289168091] [2021-08-26 14:14:19,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289168091] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:14:19,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:14:19,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:14:19,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407078747] [2021-08-26 14:14:19,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:14:19,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:14:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:14:19,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:14:19,300 INFO L87 Difference]: Start difference. First operand has 340 states, 337 states have (on average 2.827893175074184) internal successors, (953), 339 states have internal predecessors, (953), 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 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14:14:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:14:19,344 INFO L93 Difference]: Finished difference Result 350 states and 923 transitions. [2021-08-26 14:14:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:14:19,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-08-26 14:14:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:14:19,358 INFO L225 Difference]: With dead ends: 350 [2021-08-26 14:14:19,358 INFO L226 Difference]: Without dead ends: 296 [2021-08-26 14:14:19,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:14:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-08-26 14:14:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 280. [2021-08-26 14:14:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 276 states have (on average 2.7246376811594204) internal successors, (752), 279 states have internal predecessors, (752), 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 14:14:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 752 transitions. [2021-08-26 14:14:19,427 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 752 transitions. Word has length 6 [2021-08-26 14:14:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:14:19,428 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 752 transitions. [2021-08-26 14:14:19,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14:14:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 752 transitions. [2021-08-26 14:14:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 14:14:19,430 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:14:19,431 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:14:19,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:14:19,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-26 14:14:19,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:14:19,432 INFO L82 PathProgramCache]: Analyzing trace with hash -330274617, now seen corresponding path program 1 times [2021-08-26 14:14:19,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:14:19,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528035016] [2021-08-26 14:14:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:14:19,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:14:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:14:19,532 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 14:14:19,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:14:19,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528035016] [2021-08-26 14:14:19,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528035016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:14:19,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:14:19,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:14:19,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670565896] [2021-08-26 14:14:19,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:14:19,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:14:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:14:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:14:19,538 INFO L87 Difference]: Start difference. First operand 280 states and 752 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 14:14:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:14:19,564 INFO L93 Difference]: Finished difference Result 268 states and 705 transitions. [2021-08-26 14:14:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:14:19,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-08-26 14:14:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:14:19,568 INFO L225 Difference]: With dead ends: 268 [2021-08-26 14:14:19,568 INFO L226 Difference]: Without dead ends: 198 [2021-08-26 14:14:19,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:14:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-26 14:14:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-08-26 14:14:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 2.716494845360825) internal successors, (527), 197 states have internal predecessors, (527), 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 14:14:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 527 transitions. [2021-08-26 14:14:19,588 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 527 transitions. Word has length 8 [2021-08-26 14:14:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:14:19,588 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 527 transitions. [2021-08-26 14:14:19,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 14:14:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 527 transitions. [2021-08-26 14:14:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 14:14:19,590 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:14:19,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:14:19,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:14:19,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-26 14:14:19,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:14:19,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1037860650, now seen corresponding path program 1 times [2021-08-26 14:14:19,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:14:19,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233560984] [2021-08-26 14:14:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:14:19,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:14:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:14:19,642 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 14:14:19,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:14:19,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233560984] [2021-08-26 14:14:19,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233560984] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:14:19,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:14:19,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:14:19,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787596968] [2021-08-26 14:14:19,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:14:19,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:14:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:14:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:14:19,645 INFO L87 Difference]: Start difference. First operand 198 states and 527 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14:14:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:14:19,688 INFO L93 Difference]: Finished difference Result 278 states and 779 transitions. [2021-08-26 14:14:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:14:19,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-08-26 14:14:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:14:19,690 INFO L225 Difference]: With dead ends: 278 [2021-08-26 14:14:19,691 INFO L226 Difference]: Without dead ends: 254 [2021-08-26 14:14:19,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:14:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-08-26 14:14:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 198. [2021-08-26 14:14:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 2.711340206185567) internal successors, (526), 197 states have internal predecessors, (526), 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 14:14:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 526 transitions. [2021-08-26 14:14:19,705 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 526 transitions. Word has length 11 [2021-08-26 14:14:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:14:19,706 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 526 transitions. [2021-08-26 14:14:19,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14:14:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 526 transitions. [2021-08-26 14:14:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 14:14:19,712 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:14:19,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:14:19,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 14:14:19,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-26 14:14:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:14:19,713 INFO L82 PathProgramCache]: Analyzing trace with hash 559274149, now seen corresponding path program 1 times [2021-08-26 14:14:19,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:14:19,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539378359] [2021-08-26 14:14:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:14:19,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:14:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:14:19,802 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 14:14:19,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:14:19,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539378359] [2021-08-26 14:14:19,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539378359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:14:19,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:14:19,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:14:19,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47965601] [2021-08-26 14:14:19,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:14:19,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:14:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:14:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:14:19,807 INFO L87 Difference]: Start difference. First operand 198 states and 526 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14:14:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:14:19,895 INFO L93 Difference]: Finished difference Result 244 states and 723 transitions. [2021-08-26 14:14:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:14:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-08-26 14:14:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:14:19,896 INFO L225 Difference]: With dead ends: 244 [2021-08-26 14:14:19,896 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 14:14:19,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:14:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 14:14:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 14:14:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 14:14:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 14:14:19,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-08-26 14:14:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:14:19,898 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 14:14:19,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14:14:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 14:14:19,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 14:14:19,901 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:14:19,901 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:14:19,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:14:19,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-26 14:14:19,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:14:19,903 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:14:19,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 14:14:19,907 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:14:19,908 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:14:19,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:14:19 BasicIcfg [2021-08-26 14:14:19,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:14:19,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:14:19,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:14:19,912 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:14:19,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:14:14" (3/4) ... [2021-08-26 14:14:19,914 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 14:14:19,918 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-08-26 14:14:19,919 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-08-26 14:14:19,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-26 14:14:19,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 14:14:19,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:14:19,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:14:19,948 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:14:19,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:14:19,950 INFO L168 Benchmark]: Toolchain (without parser) took 6493.82 ms. Allocated memory was 62.9 MB in the beginning and 113.2 MB in the end (delta: 50.3 MB). Free memory was 42.7 MB in the beginning and 79.2 MB in the end (delta: -36.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-08-26 14:14:19,950 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory is still 45.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:14:19,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.48 ms. Allocated memory is still 62.9 MB. Free memory was 42.6 MB in the beginning and 36.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-26 14:14:19,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.18 ms. Allocated memory is still 62.9 MB. Free memory was 36.6 MB in the beginning and 34.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:14:19,951 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 ms. Allocated memory is still 62.9 MB. Free memory was 34.7 MB in the beginning and 33.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:14:19,952 INFO L168 Benchmark]: RCFGBuilder took 661.75 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 40.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:14:19,952 INFO L168 Benchmark]: TraceAbstraction took 5246.73 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 40.0 MB in the beginning and 81.3 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:14:19,952 INFO L168 Benchmark]: Witness Printer took 36.34 ms. Allocated memory is still 113.2 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:14:19,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory is still 45.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.48 ms. Allocated memory is still 62.9 MB. Free memory was 42.6 MB in the beginning and 36.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.18 ms. Allocated memory is still 62.9 MB. Free memory was 36.6 MB in the beginning and 34.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.59 ms. Allocated memory is still 62.9 MB. Free memory was 34.7 MB in the beginning and 33.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 661.75 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 40.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5246.73 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 40.0 MB in the beginning and 81.3 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 36.34 ms. Allocated memory is still 113.2 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 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: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4219.2ms, 94 PlacesBefore, 41 PlacesAfterwards, 100 TransitionsBefore, 41 TransitionsAfterwards, 2132 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 81 TotalNumberOfCompositions, 5986 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3005, positive: 2795, positive conditional: 0, positive unconditional: 2795, negative: 210, negative conditional: 0, negative unconditional: 210, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1425, positive: 1381, positive conditional: 0, positive unconditional: 1381, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1425, positive: 1350, positive conditional: 0, positive unconditional: 1350, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 171, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3005, positive: 1414, positive conditional: 0, positive unconditional: 1414, negative: 166, negative conditional: 0, negative unconditional: 166, unknown: 1425, unknown conditional: 0, unknown unconditional: 1425] , Statistics on independence cache: Total cache size (in pairs): 244, Positive cache size: 214, Positive conditional cache size: 0, Positive unconditional cache size: 214, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30 - 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 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5084.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 16.4ms, AutomataDifference: 245.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4273.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 193 SDtfs, 132 SDslu, 148 SDs, 0 SdLazy, 65 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 88.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 72 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.4ms SsaConstructionTime, 73.8ms SatisfiabilityAnalysisTime, 214.0ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-26 14:14:20,001 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...