./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.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-atomic/peterson.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 997418c6caa3dfe6137e5cc9e02fb9342381aa72 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:02:49,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:02:49,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:02:49,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:02:49,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:02:49,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:02:49,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:02:49,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:02:49,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:02:49,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:02:49,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:02:49,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:02:49,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:02:49,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:02:49,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:02:49,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:02:49,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:02:49,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:02:49,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:02:49,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:02:49,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:02:49,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:02:49,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:02:49,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:02:49,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:02:49,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:02:49,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:02:49,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:02:49,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:02:49,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:02:49,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:02:49,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:02:49,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:02:49,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:02:49,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:02:49,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:02:49,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:02:49,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:02:49,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:02:49,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:02:49,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:02:49,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:02:49,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:02:49,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:02:49,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:02:49,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:02:49,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:02:49,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:02:49,589 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:02:49,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:02:49,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:02:49,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:02:49,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:02:49,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:02:49,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:02:49,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:02:49,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:02:49,591 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:02:49,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:02:49,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:02:49,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:02:49,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:02:49,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:02:49,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:02:49,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:02:49,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:02:49,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:02:49,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:02:49,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:02:49,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:02:49,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:02:49,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:02:49,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997418c6caa3dfe6137e5cc9e02fb9342381aa72 [2021-08-29 22:02:49,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:02:49,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:02:49,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:02:49,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:02:49,931 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:02:49,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2021-08-29 22:02:49,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc27a3f65/3c0948e49772467395ae4421661ffa90/FLAGcb8bd39c9 [2021-08-29 22:02:50,487 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:02:50,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2021-08-29 22:02:50,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc27a3f65/3c0948e49772467395ae4421661ffa90/FLAGcb8bd39c9 [2021-08-29 22:02:51,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc27a3f65/3c0948e49772467395ae4421661ffa90 [2021-08-29 22:02:51,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:02:51,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:02:51,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:02:51,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:02:51,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:02:51,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169f0178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51, skipping insertion in model container [2021-08-29 22:02:51,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:02:51,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:02:51,189 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-29 22:02:51,317 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/peterson.i[30997,31010] [2021-08-29 22:02:51,322 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/peterson.i[31682,31695] [2021-08-29 22:02:51,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:02:51,335 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:02:51,352 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-29 22:02:51,385 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/peterson.i[30997,31010] [2021-08-29 22:02:51,387 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/peterson.i[31682,31695] [2021-08-29 22:02:51,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:02:51,427 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:02:51,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51 WrapperNode [2021-08-29 22:02:51,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:02:51,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:02:51,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:02:51,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:02:51,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:02:51,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:02:51,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:02:51,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:02:51,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:02:51,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:02:51,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:02:51,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:02:51,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (1/1) ... [2021-08-29 22:02:51,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:02:51,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:51,530 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 22:02:51,545 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 22:02:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 22:02:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-29 22:02:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-29 22:02:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-29 22:02:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-29 22:02:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:02:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:02:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:02:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:02:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:02:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:02:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:02:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:02:51,560 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 22:02:51,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:02:51,769 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 22:02:51,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:02:51 BoogieIcfgContainer [2021-08-29 22:02:51,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:02:51,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:02:51,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:02:51,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:02:51,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:02:51" (1/3) ... [2021-08-29 22:02:51,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea3d994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:02:51, skipping insertion in model container [2021-08-29 22:02:51,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:51" (2/3) ... [2021-08-29 22:02:51,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea3d994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:02:51, skipping insertion in model container [2021-08-29 22:02:51,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:02:51" (3/3) ... [2021-08-29 22:02:51,777 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-08-29 22:02:51,780 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:02:51,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:02:51,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 22:02:51,781 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:02:51,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,842 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:51,858 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-29 22:02:51,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:02:51,924 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 22:02:51,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 22:02:51,942 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:02:51,957 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 78 transitions, 172 flow [2021-08-29 22:02:51,960 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 78 transitions, 172 flow [2021-08-29 22:02:51,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 172 flow [2021-08-29 22:02:52,029 INFO L129 PetriNetUnfolder]: 6/76 cut-off events. [2021-08-29 22:02:52,029 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-29 22:02:52,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-08-29 22:02:52,038 INFO L116 LiptonReduction]: Number of co-enabled transitions 1188 [2021-08-29 22:02:54,137 INFO L131 LiptonReduction]: Checked pairs total: 3390 [2021-08-29 22:02:54,137 INFO L133 LiptonReduction]: Total number of compositions: 57 [2021-08-29 22:02:54,145 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions, 82 flow [2021-08-29 22:02:54,166 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 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 22:02:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 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 22:02:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:02:54,175 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:54,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:54,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:02:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:54,180 INFO L82 PathProgramCache]: Analyzing trace with hash 554923094, now seen corresponding path program 1 times [2021-08-29 22:02:54,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:54,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448553708] [2021-08-29 22:02:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:54,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:54,332 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 22:02:54,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:54,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448553708] [2021-08-29 22:02:54,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448553708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:54,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:54,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:02:54,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107314927] [2021-08-29 22:02:54,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:02:54,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:54,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:02:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:02:54,359 INFO L87 Difference]: Start difference. First operand has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 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 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) [2021-08-29 22:02:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:54,437 INFO L93 Difference]: Finished difference Result 236 states and 542 transitions. [2021-08-29 22:02:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:02:54,439 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 [2021-08-29 22:02:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:54,452 INFO L225 Difference]: With dead ends: 236 [2021-08-29 22:02:54,453 INFO L226 Difference]: Without dead ends: 208 [2021-08-29 22:02:54,454 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:02:54,457 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.74ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:54,459 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 26 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 38.74ms Time] [2021-08-29 22:02:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-08-29 22:02:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 196. [2021-08-29 22:02:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 2.375) internal successors, (456), 195 states have internal predecessors, (456), 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 22:02:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 456 transitions. [2021-08-29 22:02:54,498 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 456 transitions. Word has length 8 [2021-08-29 22:02:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:54,499 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 456 transitions. [2021-08-29 22:02:54,499 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) [2021-08-29 22:02:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 456 transitions. [2021-08-29 22:02:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:02:54,505 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:54,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:54,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:02:54,506 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:02:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2085363605, now seen corresponding path program 1 times [2021-08-29 22:02:54,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:54,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128866204] [2021-08-29 22:02:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:54,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:54,588 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 22:02:54,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:54,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128866204] [2021-08-29 22:02:54,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128866204] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:54,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:54,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:02:54,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023997783] [2021-08-29 22:02:54,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:02:54,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:02:54,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:02:54,592 INFO L87 Difference]: Start difference. First operand 196 states and 456 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 22:02:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:54,636 INFO L93 Difference]: Finished difference Result 186 states and 420 transitions. [2021-08-29 22:02:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:02:54,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-08-29 22:02:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:54,640 INFO L225 Difference]: With dead ends: 186 [2021-08-29 22:02:54,641 INFO L226 Difference]: Without dead ends: 140 [2021-08-29 22:02:54,642 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:02:54,643 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.31ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:54,643 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 27 Invalid, 38 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 38.31ms Time] [2021-08-29 22:02:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-29 22:02:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-08-29 22:02:54,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 2.323529411764706) internal successors, (316), 139 states have internal predecessors, (316), 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 22:02:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 316 transitions. [2021-08-29 22:02:54,661 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 316 transitions. Word has length 10 [2021-08-29 22:02:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:54,661 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 316 transitions. [2021-08-29 22:02:54,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 22:02:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 316 transitions. [2021-08-29 22:02:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:02:54,664 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:54,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:54,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:02:54,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:02:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:54,666 INFO L82 PathProgramCache]: Analyzing trace with hash 978497258, now seen corresponding path program 1 times [2021-08-29 22:02:54,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:54,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717516393] [2021-08-29 22:02:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:54,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:54,766 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 22:02:54,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:54,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717516393] [2021-08-29 22:02:54,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717516393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:54,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:54,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 22:02:54,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827050070] [2021-08-29 22:02:54,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:02:54,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:02:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:02:54,771 INFO L87 Difference]: Start difference. First operand 140 states and 316 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 22:02:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:54,906 INFO L93 Difference]: Finished difference Result 210 states and 491 transitions. [2021-08-29 22:02:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:02:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-08-29 22:02:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:54,908 INFO L225 Difference]: With dead ends: 210 [2021-08-29 22:02:54,908 INFO L226 Difference]: Without dead ends: 140 [2021-08-29 22:02:54,908 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.39ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 22:02:54,909 INFO L928 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.80ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:54,910 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 80 Invalid, 152 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [9 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 99.80ms Time] [2021-08-29 22:02:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-29 22:02:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-08-29 22:02:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 2.2983870967741935) internal successors, (285), 127 states have internal predecessors, (285), 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 22:02:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 285 transitions. [2021-08-29 22:02:54,918 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 285 transitions. Word has length 15 [2021-08-29 22:02:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:54,918 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 285 transitions. [2021-08-29 22:02:54,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 22:02:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 285 transitions. [2021-08-29 22:02:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:02:54,920 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:54,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:54,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:02:54,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:02:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:54,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1358916358, now seen corresponding path program 2 times [2021-08-29 22:02:54,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:54,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313481805] [2021-08-29 22:02:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:54,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:54,987 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 22:02:54,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:54,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313481805] [2021-08-29 22:02:54,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313481805] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:54,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:54,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 22:02:54,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303049826] [2021-08-29 22:02:54,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:02:54,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:02:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:02:54,989 INFO L87 Difference]: Start difference. First operand 128 states and 285 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 22:02:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:55,054 INFO L93 Difference]: Finished difference Result 90 states and 214 transitions. [2021-08-29 22:02:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:02:55,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-08-29 22:02:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:55,055 INFO L225 Difference]: With dead ends: 90 [2021-08-29 22:02:55,055 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:02:55,056 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.70ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-29 22:02:55,061 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.43ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:55,062 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 41 Invalid, 72 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 44.43ms Time] [2021-08-29 22:02:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:02:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:02:55,066 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 22:02:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:02:55,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-29 22:02:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:55,066 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:02:55,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 22:02:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:02:55,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:02:55,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 22:02:55,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 22:02:55,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-08-29 22:02:55,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-08-29 22:02:55,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 22:02:55,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 22:02:55,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:02:55,081 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:02:55,081 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:02:55,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:02:55 BasicIcfg [2021-08-29 22:02:55,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:02:55,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:02:55,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:02:55,090 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:02:55,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:02:51" (3/4) ... [2021-08-29 22:02:55,093 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:02:55,098 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-08-29 22:02:55,098 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-08-29 22:02:55,102 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 22:02:55,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:02:55,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:02:55,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:02:55,127 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:02:55,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:02:55,128 INFO L158 Benchmark]: Toolchain (without parser) took 4103.14ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 41.3MB in the beginning and 31.7MB in the end (delta: 9.7MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2021-08-29 22:02:55,128 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:02:55,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.59ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 36.1MB in the end (delta: 5.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 22:02:55,129 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.39ms. Allocated memory is still 62.9MB. Free memory was 35.9MB in the beginning and 34.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:02:55,129 INFO L158 Benchmark]: Boogie Preprocessor took 30.38ms. Allocated memory is still 62.9MB. Free memory was 34.1MB in the beginning and 32.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:02:55,129 INFO L158 Benchmark]: RCFGBuilder took 270.70ms. Allocated memory is still 62.9MB. Free memory was 32.7MB in the beginning and 39.5MB in the end (delta: -6.8MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2021-08-29 22:02:55,130 INFO L158 Benchmark]: TraceAbstraction took 3315.58ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.9MB in the beginning and 34.3MB in the end (delta: 4.6MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-08-29 22:02:55,130 INFO L158 Benchmark]: Witness Printer took 37.68ms. Allocated memory is still 75.5MB. Free memory was 34.3MB in the beginning and 31.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:02:55,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.59ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 36.1MB in the end (delta: 5.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.39ms. Allocated memory is still 62.9MB. Free memory was 35.9MB in the beginning and 34.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.38ms. Allocated memory is still 62.9MB. Free memory was 34.1MB in the beginning and 32.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.70ms. Allocated memory is still 62.9MB. Free memory was 32.7MB in the beginning and 39.5MB in the end (delta: -6.8MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3315.58ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.9MB in the beginning and 34.3MB in the end (delta: 4.6MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 37.68ms. Allocated memory is still 75.5MB. Free memory was 34.3MB in the beginning and 31.7MB in the end (delta: 2.6MB). 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: 2177.53ms, 79 PlacesBefore, 36 PlacesAfterwards, 78 TransitionsBefore, 33 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 3390 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1767, positive: 1621, positive conditional: 0, positive unconditional: 1621, negative: 146, negative conditional: 0, negative unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 919, positive: 879, positive conditional: 0, positive unconditional: 879, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 919, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 76, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1767, positive: 742, positive conditional: 0, positive unconditional: 742, negative: 106, negative conditional: 0, negative unconditional: 106, unknown: 919, unknown conditional: 0, unknown unconditional: 919] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: 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, 107 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3172.18ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 17.20ms, AutomataDifference: 392.37ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2242.09ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 221.28ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 162.76ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 266 IncrementalHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 71 mSDtfsCounter, 266 mSolverCounterSat, 8.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.97ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 51.32ms AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.53ms SsaConstructionTime, 69.83ms SatisfiabilityAnalysisTime, 226.19ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 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! [2021-08-29 22:02:55,166 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...