./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_tso.oepc.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-wmm/safe018_tso.oepc.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 57837267e4cea353542afbab86ff217e99d6c163 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:23:07,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:23:07,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:23:07,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:23:07,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:23:07,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:23:07,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:23:07,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:23:07,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:23:07,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:23:07,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:23:07,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:23:07,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:23:07,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:23:07,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:23:07,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:23:07,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:23:07,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:23:07,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:23:07,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:23:07,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:23:07,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:23:07,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:23:07,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:23:07,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:23:07,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:23:07,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:23:07,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:23:07,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:23:07,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:23:07,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:23:07,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:23:07,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:23:07,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:23:07,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:23:07,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:23:07,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:23:07,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:23:07,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:23:07,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:23:07,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:23:07,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:23:07,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:23:07,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:23:07,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:23:07,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:23:07,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:23:07,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:23:07,582 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:23:07,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:23:07,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:23:07,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:23:07,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:23:07,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:23:07,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:23:07,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:23:07,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:23:07,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:23:07,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:23:07,585 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:23:07,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:23:07,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:23:07,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:23:07,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:23:07,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:07,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:23:07,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:23:07,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:23:07,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:23:07,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:23:07,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:23:07,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:23:07,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57837267e4cea353542afbab86ff217e99d6c163 [2021-08-29 22:23:07,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:23:07,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:23:07,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:23:07,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:23:07,971 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:23:07,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_tso.oepc.i [2021-08-29 22:23:08,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e1422dc/b931407d73344e649c993b059173539b/FLAG6295fc106 [2021-08-29 22:23:08,583 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:23:08,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_tso.oepc.i [2021-08-29 22:23:08,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e1422dc/b931407d73344e649c993b059173539b/FLAG6295fc106 [2021-08-29 22:23:09,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e1422dc/b931407d73344e649c993b059173539b [2021-08-29 22:23:09,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:23:09,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:23:09,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:09,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:23:09,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:23:09,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6933e4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09, skipping insertion in model container [2021-08-29 22:23:09,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:23:09,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:23:09,248 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-wmm/safe018_tso.oepc.i[950,963] [2021-08-29 22:23:09,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:09,437 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:23:09,448 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-wmm/safe018_tso.oepc.i[950,963] [2021-08-29 22:23:09,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:09,529 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:23:09,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09 WrapperNode [2021-08-29 22:23:09,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:09,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:09,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:23:09,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:23:09,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:09,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:23:09,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:23:09,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:23:09,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:23:09,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:23:09,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:23:09,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:23:09,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (1/1) ... [2021-08-29 22:23:09,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:23:09,680 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 22:23:09,701 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 22:23:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:23:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:23:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:23:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:23:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:23:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:23:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:23:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:23:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:23:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:23:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:23:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:23:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:23:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:23:09,725 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 22:23:09,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:23:09,996 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:23:09,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:09 BoogieIcfgContainer [2021-08-29 22:23:09,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:23:10,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:23:10,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:23:10,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:23:10,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:23:09" (1/3) ... [2021-08-29 22:23:10,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679d2757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:10, skipping insertion in model container [2021-08-29 22:23:10,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:09" (2/3) ... [2021-08-29 22:23:10,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679d2757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:10, skipping insertion in model container [2021-08-29 22:23:10,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:09" (3/3) ... [2021-08-29 22:23:10,007 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2021-08-29 22:23:10,014 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:23:10,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:23:10,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:23:10,015 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:23:10,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,059 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,060 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,060 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,076 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,076 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,076 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,077 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,080 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:10,082 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:23:10,136 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:23:10,144 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 22:23:10,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-29 22:23:10,171 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:23:10,184 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-08-29 22:23:10,187 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-08-29 22:23:10,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-08-29 22:23:10,252 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-08-29 22:23:10,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:23:10,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-29 22:23:10,261 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2021-08-29 22:23:12,865 INFO L131 LiptonReduction]: Checked pairs total: 2368 [2021-08-29 22:23:12,865 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-08-29 22:23:12,873 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2021-08-29 22:23:12,891 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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 22:23:12,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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 22:23:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:23:12,903 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:12,903 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:12,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash -310839676, now seen corresponding path program 1 times [2021-08-29 22:23:12,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:12,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465610951] [2021-08-29 22:23:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:12,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:13,110 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 22:23:13,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:13,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465610951] [2021-08-29 22:23:13,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465610951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:13,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:13,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:23:13,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871798000] [2021-08-29 22:23:13,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:23:13,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:23:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:23:13,136 INFO L87 Difference]: Start difference. First operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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), 2 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 22:23:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:13,166 INFO L93 Difference]: Finished difference Result 166 states and 441 transitions. [2021-08-29 22:23:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:23:13,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 22:23:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:13,177 INFO L225 Difference]: With dead ends: 166 [2021-08-29 22:23:13,177 INFO L226 Difference]: Without dead ends: 166 [2021-08-29 22:23:13,178 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:23:13,181 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.95ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:13,182 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 11 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 10.95ms Time] [2021-08-29 22:23:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-29 22:23:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-08-29 22:23:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.672727272727273) internal successors, (441), 165 states have internal predecessors, (441), 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 22:23:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2021-08-29 22:23:13,221 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2021-08-29 22:23:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2021-08-29 22:23:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 22:23:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2021-08-29 22:23:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:23:13,224 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:13,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:13,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:23:13,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash -515150132, now seen corresponding path program 1 times [2021-08-29 22:23:13,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:13,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043732179] [2021-08-29 22:23:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:13,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:13,286 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 22:23:13,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:13,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043732179] [2021-08-29 22:23:13,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043732179] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:13,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:13,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:13,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704183038] [2021-08-29 22:23:13,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:13,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:13,289 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:13,330 INFO L93 Difference]: Finished difference Result 184 states and 465 transitions. [2021-08-29 22:23:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:23:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-08-29 22:23:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:13,332 INFO L225 Difference]: With dead ends: 184 [2021-08-29 22:23:13,333 INFO L226 Difference]: Without dead ends: 88 [2021-08-29 22:23:13,334 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:13,335 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.76ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:13,335 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 14 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 10.76ms Time] [2021-08-29 22:23:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-29 22:23:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-08-29 22:23:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 87 states have internal predecessors, (207), 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 22:23:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 207 transitions. [2021-08-29 22:23:13,347 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 207 transitions. Word has length 9 [2021-08-29 22:23:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:13,347 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 207 transitions. [2021-08-29 22:23:13,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 207 transitions. [2021-08-29 22:23:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:23:13,349 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:13,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:13,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:23:13,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:13,351 INFO L82 PathProgramCache]: Analyzing trace with hash -277019481, now seen corresponding path program 1 times [2021-08-29 22:23:13,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:13,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190720899] [2021-08-29 22:23:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:13,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:13,461 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 22:23:13,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:13,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190720899] [2021-08-29 22:23:13,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190720899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:13,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:13,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:13,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986790771] [2021-08-29 22:23:13,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:13,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:13,467 INFO L87 Difference]: Start difference. First operand 88 states and 207 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:13,506 INFO L93 Difference]: Finished difference Result 118 states and 268 transitions. [2021-08-29 22:23:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:23:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 22:23:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:13,508 INFO L225 Difference]: With dead ends: 118 [2021-08-29 22:23:13,508 INFO L226 Difference]: Without dead ends: 64 [2021-08-29 22:23:13,509 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.74ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:13,512 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.26ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:13,513 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 25 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 19.26ms Time] [2021-08-29 22:23:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-29 22:23:13,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-08-29 22:23:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 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 22:23:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2021-08-29 22:23:13,529 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2021-08-29 22:23:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:13,529 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2021-08-29 22:23:13,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:13,531 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2021-08-29 22:23:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:23:13,532 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:13,532 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:13,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:23:13,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:13,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:13,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1298481685, now seen corresponding path program 1 times [2021-08-29 22:23:13,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:13,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177703328] [2021-08-29 22:23:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:13,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:13,635 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 22:23:13,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:13,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177703328] [2021-08-29 22:23:13,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177703328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:13,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:13,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:13,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287585509] [2021-08-29 22:23:13,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:13,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:13,641 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:23:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:13,691 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2021-08-29 22:23:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:23:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-08-29 22:23:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:13,692 INFO L225 Difference]: With dead ends: 77 [2021-08-29 22:23:13,693 INFO L226 Difference]: Without dead ends: 56 [2021-08-29 22:23:13,694 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:13,699 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.48ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:13,703 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 25 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 29.48ms Time] [2021-08-29 22:23:13,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-29 22:23:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-29 22:23:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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 22:23:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2021-08-29 22:23:13,708 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2021-08-29 22:23:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:13,709 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2021-08-29 22:23:13,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:23:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2021-08-29 22:23:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:23:13,710 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:13,710 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:13,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:23:13,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:13,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1593223979, now seen corresponding path program 1 times [2021-08-29 22:23:13,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:13,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410199223] [2021-08-29 22:23:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:13,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:13,812 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 22:23:13,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:13,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410199223] [2021-08-29 22:23:13,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410199223] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:13,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:13,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:13,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142376934] [2021-08-29 22:23:13,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:13,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:13,815 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 22:23:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:13,859 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2021-08-29 22:23:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:13,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 22:23:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:13,860 INFO L225 Difference]: With dead ends: 57 [2021-08-29 22:23:13,860 INFO L226 Difference]: Without dead ends: 42 [2021-08-29 22:23:13,860 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.87ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:13,861 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.93ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:13,861 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 17 Invalid, 35 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 28.93ms Time] [2021-08-29 22:23:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-29 22:23:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-08-29 22:23:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 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 22:23:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2021-08-29 22:23:13,864 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2021-08-29 22:23:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:13,864 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2021-08-29 22:23:13,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 22:23:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2021-08-29 22:23:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:23:13,865 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:13,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:13,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:23:13,866 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1250094408, now seen corresponding path program 1 times [2021-08-29 22:23:13,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:13,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249728452] [2021-08-29 22:23:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:13,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:13,920 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 22:23:13,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:13,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249728452] [2021-08-29 22:23:13,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249728452] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:13,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:13,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:23:13,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236943776] [2021-08-29 22:23:13,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:23:13,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:13,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:23:13,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:13,922 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:13,975 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2021-08-29 22:23:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:13,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 22:23:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:13,977 INFO L225 Difference]: With dead ends: 39 [2021-08-29 22:23:13,977 INFO L226 Difference]: Without dead ends: 33 [2021-08-29 22:23:13,977 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 29.31ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-29 22:23:13,978 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.91ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:13,978 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 13 Invalid, 46 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [19 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 31.91ms Time] [2021-08-29 22:23:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-29 22:23:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-29 22:23:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 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 22:23:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2021-08-29 22:23:13,980 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2021-08-29 22:23:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:13,981 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-08-29 22:23:13,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2021-08-29 22:23:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 22:23:13,982 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:13,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:13,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:23:13,982 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:13,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1251829557, now seen corresponding path program 1 times [2021-08-29 22:23:13,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:13,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489605710] [2021-08-29 22:23:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:13,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:14,023 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 22:23:14,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:14,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489605710] [2021-08-29 22:23:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489605710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:14,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:14,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433465355] [2021-08-29 22:23:14,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:14,033 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 22:23:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:14,053 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-08-29 22:23:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-08-29 22:23:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:14,054 INFO L225 Difference]: With dead ends: 32 [2021-08-29 22:23:14,054 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:23:14,054 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:14,055 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.12ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:14,055 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.34ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 11.12ms Time] [2021-08-29 22:23:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:23:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:23:14,056 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 22:23:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:23:14,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-08-29 22:23:14,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:14,057 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:23:14,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 22:23:14,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:23:14,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:23:14,060 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-08-29 22:23:14,060 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-08-29 22:23:14,061 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-08-29 22:23:14,061 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-08-29 22:23:14,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:23:14,065 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:23:14,065 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:23:14,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:23:14 BasicIcfg [2021-08-29 22:23:14,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:23:14,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:23:14,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:23:14,068 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:23:14,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:09" (3/4) ... [2021-08-29 22:23:14,071 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:23:14,076 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:23:14,077 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:23:14,077 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:23:14,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-29 22:23:14,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:23:14,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:14,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:14,105 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:23:14,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:23:14,106 INFO L158 Benchmark]: Toolchain (without parser) took 5067.63ms. Allocated memory was 48.2MB in the beginning and 92.3MB in the end (delta: 44.0MB). Free memory was 22.7MB in the beginning and 65.8MB in the end (delta: -43.1MB). Peak memory consumption was 769.2kB. Max. memory is 16.1GB. [2021-08-29 22:23:14,106 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 48.2MB. Free memory was 30.9MB in the beginning and 30.9MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:14,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.84ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 22.5MB in the beginning and 32.5MB in the end (delta: -10.0MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-08-29 22:23:14,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.86ms. Allocated memory is still 58.7MB. Free memory was 32.5MB in the beginning and 30.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:14,107 INFO L158 Benchmark]: Boogie Preprocessor took 46.30ms. Allocated memory is still 58.7MB. Free memory was 30.5MB in the beginning and 29.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:14,107 INFO L158 Benchmark]: RCFGBuilder took 356.50ms. Allocated memory is still 58.7MB. Free memory was 29.2MB in the beginning and 32.8MB in the end (delta: -3.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-08-29 22:23:14,108 INFO L158 Benchmark]: TraceAbstraction took 4066.81ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 32.3MB in the beginning and 68.5MB in the end (delta: -36.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:14,108 INFO L158 Benchmark]: Witness Printer took 37.72ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 65.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:14,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 48.2MB. Free memory was 30.9MB in the beginning and 30.9MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.84ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 22.5MB in the beginning and 32.5MB in the end (delta: -10.0MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.86ms. Allocated memory is still 58.7MB. Free memory was 32.5MB in the beginning and 30.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.30ms. Allocated memory is still 58.7MB. Free memory was 30.5MB in the beginning and 29.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 356.50ms. Allocated memory is still 58.7MB. Free memory was 29.2MB in the beginning and 32.8MB in the end (delta: -3.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4066.81ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 32.3MB in the beginning and 68.5MB in the end (delta: -36.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.72ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 65.8MB in the end (delta: 2.7MB). 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: 2678.35ms, 91 PlacesBefore, 30 PlacesAfterwards, 83 TransitionsBefore, 20 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2368 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1270, positive: 1188, positive conditional: 0, positive unconditional: 1188, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 885, positive: 849, positive conditional: 0, positive unconditional: 849, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 885, positive: 847, positive conditional: 0, positive unconditional: 847, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1270, positive: 339, positive conditional: 0, positive unconditional: 339, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 885, unknown conditional: 0, unknown unconditional: 885] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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: 18]: 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 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3929.55ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 16.89ms, AutomataDifference: 359.99ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2746.99ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 142.39ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 130 SdHoareTripleChecker+Invalid, 118.91ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 63 mSDtfsCounter, 130 mSolverCounterSat, 5.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 101.33ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 63.13ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.82ms SsaConstructionTime, 171.61ms SatisfiabilityAnalysisTime, 372.83ms InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 22:23:14,147 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...