./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/sync01.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 bfadf9642c1a15dc7e36a17b923c507de577ccb8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:01:39,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:01:39,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:01:40,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:01:40,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:01:40,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:01:40,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:01:40,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:01:40,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:01:40,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:01:40,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:01:40,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:01:40,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:01:40,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:01:40,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:01:40,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:01:40,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:01:40,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:01:40,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:01:40,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:01:40,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:01:40,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:01:40,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:01:40,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:01:40,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:01:40,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:01:40,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:01:40,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:01:40,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:01:40,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:01:40,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:01:40,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:01:40,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:01:40,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:01:40,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:01:40,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:01:40,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:01:40,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:01:40,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:01:40,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:01:40,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:01:40,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:01:40,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:01:40,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:01:40,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:01:40,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:01:40,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:01:40,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:01:40,077 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:01:40,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:01:40,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:01:40,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:01:40,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:01:40,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:01:40,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:01:40,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:01:40,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:01:40,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:01:40,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:01:40,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:01:40,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:01:40,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:01:40,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:01:40,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:01:40,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:01:40,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:01:40,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:01:40,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:01:40,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:01:40,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:01:40,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:01:40,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:01:40,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfadf9642c1a15dc7e36a17b923c507de577ccb8 [2021-08-29 22:01:40,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:01:40,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:01:40,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:01:40,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:01:40,313 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:01:40,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2021-08-29 22:01:40,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75cd8c055/0bc861c4adf14503badeddd1f75e0356/FLAG7f13a4ae1 [2021-08-29 22:01:40,736 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:01:40,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2021-08-29 22:01:40,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75cd8c055/0bc861c4adf14503badeddd1f75e0356/FLAG7f13a4ae1 [2021-08-29 22:01:41,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75cd8c055/0bc861c4adf14503badeddd1f75e0356 [2021-08-29 22:01:41,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:01:41,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:01:41,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:01:41,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:01:41,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:01:41,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5280b5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41, skipping insertion in model container [2021-08-29 22:01:41,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:01:41,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:01:41,452 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/sync01.i[42004,42017] [2021-08-29 22:01:41,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:01:41,493 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:01:41,527 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/sync01.i[42004,42017] [2021-08-29 22:01:41,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:01:41,572 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:01:41,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41 WrapperNode [2021-08-29 22:01:41,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:01:41,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:01:41,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:01:41,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:01:41,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:01:41,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:01:41,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:01:41,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:01:41,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:01:41,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:01:41,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:01:41,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:01:41,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (1/1) ... [2021-08-29 22:01:41,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:01:41,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:01:41,670 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) [2021-08-29 22:01:41,673 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 [2021-08-29 22:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:01:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 22:01:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-29 22:01:41,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-29 22:01:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-29 22:01:41,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-29 22:01:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:01:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-29 22:01:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:01:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:01:41,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:01:41,705 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:01:41,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:01:41,922 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 22:01:41,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:01:41 BoogieIcfgContainer [2021-08-29 22:01:41,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:01:41,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:01:41,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:01:41,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:01:41,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:01:41" (1/3) ... [2021-08-29 22:01:41,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ffe34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:01:41, skipping insertion in model container [2021-08-29 22:01:41,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:01:41" (2/3) ... [2021-08-29 22:01:41,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ffe34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:01:41, skipping insertion in model container [2021-08-29 22:01:41,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:01:41" (3/3) ... [2021-08-29 22:01:41,931 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2021-08-29 22:01:41,934 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:01:41,935 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:01:41,935 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:01:41,935 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:01:41,988 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,988 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,988 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,989 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,989 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,989 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,989 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,989 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,990 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,990 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,990 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:41,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,005 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,005 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,006 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,006 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,006 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,009 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,009 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,009 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,009 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,009 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,009 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,010 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:01:42,012 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-29 22:01:42,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:01:42,048 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 [2021-08-29 22:01:42,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-29 22:01:42,058 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:01:42,067 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 100 transitions, 216 flow [2021-08-29 22:01:42,069 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 100 transitions, 216 flow [2021-08-29 22:01:42,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 100 transitions, 216 flow [2021-08-29 22:01:42,144 INFO L129 PetriNetUnfolder]: 5/98 cut-off events. [2021-08-29 22:01:42,144 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-29 22:01:42,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 5/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2021-08-29 22:01:42,152 INFO L116 LiptonReduction]: Number of co-enabled transitions 900 [2021-08-29 22:01:47,461 INFO L131 LiptonReduction]: Checked pairs total: 3065 [2021-08-29 22:01:47,461 INFO L133 LiptonReduction]: Total number of compositions: 81 [2021-08-29 22:01:47,476 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 30 transitions, 76 flow [2021-08-29 22:01:47,496 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 164 states, 163 states have (on average 2.6012269938650308) internal successors, (424), 163 states have internal predecessors, (424), 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) [2021-08-29 22:01:47,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 163 states have (on average 2.6012269938650308) internal successors, (424), 163 states have internal predecessors, (424), 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) [2021-08-29 22:01:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:01:47,509 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:01:47,509 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:01:47,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:01:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:01:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1729244696, now seen corresponding path program 1 times [2021-08-29 22:01:47,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:01:47,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420527443] [2021-08-29 22:01:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:01:47,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:01:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:01:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:01:47,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:01:47,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420527443] [2021-08-29 22:01:47,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420527443] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:01:47,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:01:47,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:01:47,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251059228] [2021-08-29 22:01:47,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 22:01:47,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:01:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 22:01:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 22:01:47,698 INFO L87 Difference]: Start difference. First operand has 164 states, 163 states have (on average 2.6012269938650308) internal successors, (424), 163 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-08-29 22:01:47,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:01:47,730 INFO L93 Difference]: Finished difference Result 164 states and 388 transitions. [2021-08-29 22:01:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 22:01:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-08-29 22:01:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:01:47,741 INFO L225 Difference]: With dead ends: 164 [2021-08-29 22:01:47,741 INFO L226 Difference]: Without dead ends: 164 [2021-08-29 22:01:47,742 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 22:01:47,745 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.92ms IncrementalHoareTripleChecker+Time [2021-08-29 22:01:47,746 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 12 Unknown, 0 Unchecked, 0.24ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 12.92ms Time] [2021-08-29 22:01:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-08-29 22:01:47,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-08-29 22:01:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.3803680981595092) internal successors, (388), 163 states have internal predecessors, (388), 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) [2021-08-29 22:01:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 388 transitions. [2021-08-29 22:01:47,772 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 388 transitions. Word has length 13 [2021-08-29 22:01:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:01:47,773 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 388 transitions. [2021-08-29 22:01:47,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-08-29 22:01:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 388 transitions. [2021-08-29 22:01:47,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:01:47,774 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:01:47,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:01:47,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:01:47,775 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:01:47,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:01:47,775 INFO L82 PathProgramCache]: Analyzing trace with hash -879059256, now seen corresponding path program 1 times [2021-08-29 22:01:47,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:01:47,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154058029] [2021-08-29 22:01:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:01:47,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:01:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:01:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:01:47,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:01:47,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154058029] [2021-08-29 22:01:47,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154058029] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:01:47,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:01:47,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:01:47,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476197802] [2021-08-29 22:01:47,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:01:47,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:01:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:01:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:01:47,867 INFO L87 Difference]: Start difference. First operand 164 states and 388 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-08-29 22:01:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:01:47,883 INFO L93 Difference]: Finished difference Result 80 states and 170 transitions. [2021-08-29 22:01:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:01:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-08-29 22:01:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:01:47,884 INFO L225 Difference]: With dead ends: 80 [2021-08-29 22:01:47,884 INFO L226 Difference]: Without dead ends: 80 [2021-08-29 22:01:47,885 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:01:47,885 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.04ms IncrementalHoareTripleChecker+Time [2021-08-29 22:01:47,886 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 12.04ms Time] [2021-08-29 22:01:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-29 22:01:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-08-29 22:01:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.151898734177215) internal successors, (170), 79 states have internal predecessors, (170), 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) [2021-08-29 22:01:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 170 transitions. [2021-08-29 22:01:47,894 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 170 transitions. Word has length 19 [2021-08-29 22:01:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:01:47,894 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 170 transitions. [2021-08-29 22:01:47,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-08-29 22:01:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 170 transitions. [2021-08-29 22:01:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:01:47,896 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:01:47,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:01:47,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:01:47,897 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:01:47,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:01:47,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1115004856, now seen corresponding path program 2 times [2021-08-29 22:01:47,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:01:47,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657479111] [2021-08-29 22:01:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:01:47,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:01:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:01:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:01:47,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:01:47,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657479111] [2021-08-29 22:01:47,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657479111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:01:47,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:01:47,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:01:47,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398779621] [2021-08-29 22:01:47,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:01:47,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:01:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:01:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:01:47,957 INFO L87 Difference]: Start difference. First operand 80 states and 170 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-08-29 22:01:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:01:47,977 INFO L93 Difference]: Finished difference Result 54 states and 86 transitions. [2021-08-29 22:01:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:01:47,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2021-08-29 22:01:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:01:47,978 INFO L225 Difference]: With dead ends: 54 [2021-08-29 22:01:47,978 INFO L226 Difference]: Without dead ends: 54 [2021-08-29 22:01:47,978 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:01:47,979 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.81ms IncrementalHoareTripleChecker+Time [2021-08-29 22:01:47,979 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 25 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 17.81ms Time] [2021-08-29 22:01:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-29 22:01:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-29 22:01:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 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) [2021-08-29 22:01:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-08-29 22:01:47,983 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 86 transitions. Word has length 19 [2021-08-29 22:01:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:01:47,983 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-08-29 22:01:47,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-08-29 22:01:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 86 transitions. [2021-08-29 22:01:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:01:47,984 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:01:47,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:01:47,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:01:47,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:01:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:01:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1166773428, now seen corresponding path program 3 times [2021-08-29 22:01:47,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:01:47,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313651682] [2021-08-29 22:01:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:01:47,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:01:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:01:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:01:48,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:01:48,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313651682] [2021-08-29 22:01:48,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313651682] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:01:48,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:01:48,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 22:01:48,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470831390] [2021-08-29 22:01:48,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 22:01:48,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:01:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 22:01:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:01:48,061 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 22:01:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:01:48,108 INFO L93 Difference]: Finished difference Result 51 states and 80 transitions. [2021-08-29 22:01:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:01:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-08-29 22:01:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:01:48,108 INFO L225 Difference]: With dead ends: 51 [2021-08-29 22:01:48,109 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:01:48,109 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 22.08ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-29 22:01:48,113 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.80ms IncrementalHoareTripleChecker+Time [2021-08-29 22:01:48,114 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 53 Invalid, 51 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 27.80ms Time] [2021-08-29 22:01:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:01:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:01:48,115 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) [2021-08-29 22:01:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:01:48,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-08-29 22:01:48,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:01:48,116 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:01:48,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 22:01:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:01:48,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:01:48,118 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-08-29 22:01:48,118 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-08-29 22:01:48,119 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-08-29 22:01:48,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:01:48,125 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:01:48,125 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:01:48,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:01:48 BasicIcfg [2021-08-29 22:01:48,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:01:48,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:01:48,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:01:48,131 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:01:48,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:01:41" (3/4) ... [2021-08-29 22:01:48,133 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:01:48,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-08-29 22:01:48,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-08-29 22:01:48,142 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 22:01:48,143 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:01:48,143 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:01:48,143 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:01:48,166 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:01:48,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:01:48,167 INFO L158 Benchmark]: Toolchain (without parser) took 7047.65ms. Allocated memory was 56.6MB in the beginning and 125.8MB in the end (delta: 69.2MB). Free memory was 38.2MB in the beginning and 40.4MB in the end (delta: -2.3MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2021-08-29 22:01:48,167 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 44.0MB. Free memory was 26.5MB in the beginning and 26.5MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:01:48,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.58ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 35.3MB in the end (delta: 2.7MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2021-08-29 22:01:48,168 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.33ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 32.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:01:48,168 INFO L158 Benchmark]: Boogie Preprocessor took 19.52ms. Allocated memory is still 56.6MB. Free memory was 32.9MB in the beginning and 31.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:01:48,168 INFO L158 Benchmark]: RCFGBuilder took 290.93ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 31.3MB in the beginning and 46.1MB in the end (delta: -14.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-08-29 22:01:48,168 INFO L158 Benchmark]: TraceAbstraction took 6202.96ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 45.8MB in the beginning and 43.6MB in the end (delta: 2.2MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. [2021-08-29 22:01:48,168 INFO L158 Benchmark]: Witness Printer took 36.04ms. Allocated memory is still 125.8MB. Free memory was 43.6MB in the beginning and 40.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:01:48,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 44.0MB. Free memory was 26.5MB in the beginning and 26.5MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.58ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 35.3MB in the end (delta: 2.7MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.33ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 32.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.52ms. Allocated memory is still 56.6MB. Free memory was 32.9MB in the beginning and 31.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 290.93ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 31.3MB in the beginning and 46.1MB in the end (delta: -14.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6202.96ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 45.8MB in the beginning and 43.6MB in the end (delta: 2.2MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. * Witness Printer took 36.04ms. Allocated memory is still 125.8MB. Free memory was 43.6MB in the beginning and 40.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5392.83ms, 102 PlacesBefore, 33 PlacesAfterwards, 100 TransitionsBefore, 30 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 81 TotalNumberOfCompositions, 3065 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1564, positive: 1408, positive conditional: 0, positive unconditional: 1408, negative: 156, negative conditional: 0, negative unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 704, positive: 666, positive conditional: 0, positive unconditional: 666, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 704, positive: 646, positive conditional: 0, positive unconditional: 646, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 58, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1564, positive: 742, positive conditional: 0, positive unconditional: 742, negative: 118, negative conditional: 0, negative unconditional: 118, unknown: 704, unknown conditional: 0, unknown unconditional: 704] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 122, Positive conditional cache size: 0, Positive unconditional cache size: 122, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 966]: 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, 126 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6083.03ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 15.68ms, AutomataDifference: 164.77ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5449.12ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 70.57ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 57.14ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 51 mSDtfsCounter, 99 mSolverCounterSat, 2.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.31ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 28.63ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.67ms SsaConstructionTime, 105.50ms SatisfiabilityAnalysisTime, 178.98ms InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-29 22:01:48,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...