./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.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/safe019_pso.opt.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 f43935362c1335f4f9734ddabaed6e8642550761 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:23:10,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:23:10,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:23:10,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:23:10,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:23:10,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:23:10,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:23:10,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:23:10,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:23:10,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:23:10,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:23:10,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:23:10,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:23:10,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:23:10,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:23:10,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:23:10,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:23:10,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:23:10,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:23:10,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:23:10,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:23:10,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:23:10,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:23:10,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:23:10,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:23:10,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:23:10,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:23:10,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:23:10,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:23:10,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:23:10,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:23:10,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:23:10,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:23:10,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:23:10,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:23:10,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:23:10,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:23:10,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:23:10,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:23:10,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:23:10,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:23:10,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:23:10,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:23:10,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:23:10,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:23:10,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:23:10,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:23:10,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:23:10,508 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:23:10,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:23:10,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:23:10,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:23:10,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:23:10,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:23:10,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:23:10,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:23:10,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:23:10,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:23:10,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:23:10,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:23:10,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:23:10,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:23:10,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:23:10,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:23:10,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:10,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:23:10,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:23:10,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:23:10,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:23:10,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:23:10,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:23:10,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:23:10,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f43935362c1335f4f9734ddabaed6e8642550761 [2021-08-29 22:23:10,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:23:10,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:23:10,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:23:10,822 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:23:10,822 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:23:10,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2021-08-29 22:23:10,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6467f2168/d09fa45c84ea4d4ca97af6a5a6c0a273/FLAGa0bf03142 [2021-08-29 22:23:11,310 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:23:11,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2021-08-29 22:23:11,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6467f2168/d09fa45c84ea4d4ca97af6a5a6c0a273/FLAGa0bf03142 [2021-08-29 22:23:11,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6467f2168/d09fa45c84ea4d4ca97af6a5a6c0a273 [2021-08-29 22:23:11,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:23:11,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:23:11,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:11,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:23:11,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:23:11,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:11" (1/1) ... [2021-08-29 22:23:11,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1ca6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:11, skipping insertion in model container [2021-08-29 22:23:11,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:11" (1/1) ... [2021-08-29 22:23:11,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:23:11,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:23:11,954 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/safe019_pso.opt.i[949,962] [2021-08-29 22:23:12,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:12,130 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:23:12,142 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/safe019_pso.opt.i[949,962] [2021-08-29 22:23:12,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:12,223 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:23:12,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12 WrapperNode [2021-08-29 22:23:12,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:12,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:12,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:23:12,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:23:12,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:12,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:23:12,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:23:12,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:23:12,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:23:12,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:23:12,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:23:12,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:23:12,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (1/1) ... [2021-08-29 22:23:12,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:12,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:23:12,370 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 22:23:12,375 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 22:23:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:23:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:23:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:23:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:23:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:23:12,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:23:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:23:12,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:23:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:23:12,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:23:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-29 22:23:12,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-29 22:23:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:23:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:23:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:23:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:23:12,405 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 22:23:12,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:23:12,640 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:23:12,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:12 BoogieIcfgContainer [2021-08-29 22:23:12,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:23:12,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:23:12,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:23:12,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:23:12,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:23:11" (1/3) ... [2021-08-29 22:23:12,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dac4108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:12, skipping insertion in model container [2021-08-29 22:23:12,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:12" (2/3) ... [2021-08-29 22:23:12,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dac4108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:12, skipping insertion in model container [2021-08-29 22:23:12,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:12" (3/3) ... [2021-08-29 22:23:12,666 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2021-08-29 22:23:12,671 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:23:12,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:23:12,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:23:12,672 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:23:12,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,726 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,726 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,730 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,732 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,732 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,733 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,735 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,736 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,736 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,736 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,736 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,736 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,736 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,736 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,737 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,741 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,741 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,741 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,742 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,750 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:12,752 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:23:12,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:23:12,804 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 22:23:12,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-29 22:23:12,819 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:23:12,830 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 98 transitions, 216 flow [2021-08-29 22:23:12,832 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 98 transitions, 216 flow [2021-08-29 22:23:12,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2021-08-29 22:23:12,898 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-08-29 22:23:12,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:23:12,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-08-29 22:23:12,904 INFO L116 LiptonReduction]: Number of co-enabled transitions 2114 [2021-08-29 22:23:15,714 INFO L131 LiptonReduction]: Checked pairs total: 3767 [2021-08-29 22:23:15,714 INFO L133 LiptonReduction]: Total number of compositions: 82 [2021-08-29 22:23:15,724 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-08-29 22:23:15,778 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 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 22:23:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 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 22:23:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:23:15,790 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:15,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:15,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:15,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash -855573413, now seen corresponding path program 1 times [2021-08-29 22:23:15,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:15,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635066487] [2021-08-29 22:23:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:15,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:15,952 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 22:23:15,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:15,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635066487] [2021-08-29 22:23:15,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635066487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:15,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:15,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:15,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171186302] [2021-08-29 22:23:15,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 22:23:15,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 22:23:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 22:23:15,990 INFO L87 Difference]: Start difference. First operand has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:16,041 INFO L93 Difference]: Finished difference Result 706 states and 2442 transitions. [2021-08-29 22:23:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 22:23:16,046 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 22:23:16,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:16,074 INFO L225 Difference]: With dead ends: 706 [2021-08-29 22:23:16,074 INFO L226 Difference]: Without dead ends: 706 [2021-08-29 22:23:16,075 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 22:23:16,078 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.90ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:16,079 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 10.90ms Time] [2021-08-29 22:23:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-08-29 22:23:16,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-08-29 22:23:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 3.4638297872340424) internal successors, (2442), 705 states have internal predecessors, (2442), 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 22:23:16,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-08-29 22:23:16,173 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-08-29 22:23:16,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:16,174 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-08-29 22:23:16,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-08-29 22:23:16,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:23:16,176 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:16,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:16,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:23:16,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:16,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:16,178 INFO L82 PathProgramCache]: Analyzing trace with hash -752977543, now seen corresponding path program 1 times [2021-08-29 22:23:16,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:16,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436185935] [2021-08-29 22:23:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:16,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:16,285 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 22:23:16,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:16,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436185935] [2021-08-29 22:23:16,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436185935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:16,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:16,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:16,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070513968] [2021-08-29 22:23:16,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:16,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:16,289 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 22:23:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:16,350 INFO L93 Difference]: Finished difference Result 1210 states and 3960 transitions. [2021-08-29 22:23:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:16,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 22:23:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:16,358 INFO L225 Difference]: With dead ends: 1210 [2021-08-29 22:23:16,359 INFO L226 Difference]: Without dead ends: 952 [2021-08-29 22:23:16,359 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:16,361 INFO L928 BasicCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.96ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:16,361 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 54 Invalid, 40 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 25.96ms Time] [2021-08-29 22:23:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-08-29 22:23:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 820. [2021-08-29 22:23:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 3.3675213675213675) internal successors, (2758), 819 states have internal predecessors, (2758), 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 22:23:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2758 transitions. [2021-08-29 22:23:16,418 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2758 transitions. Word has length 11 [2021-08-29 22:23:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:16,419 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2758 transitions. [2021-08-29 22:23:16,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 22:23:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2758 transitions. [2021-08-29 22:23:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:23:16,428 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:16,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:16,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:23:16,429 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1046139535, now seen corresponding path program 1 times [2021-08-29 22:23:16,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:16,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603066343] [2021-08-29 22:23:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:16,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:16,550 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 22:23:16,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:16,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603066343] [2021-08-29 22:23:16,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603066343] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:16,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:16,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:16,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332012866] [2021-08-29 22:23:16,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:16,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:16,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:16,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:16,556 INFO L87 Difference]: Start difference. First operand 820 states and 2758 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 22:23:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:16,623 INFO L93 Difference]: Finished difference Result 901 states and 2929 transitions. [2021-08-29 22:23:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:16,624 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 22:23:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:16,629 INFO L225 Difference]: With dead ends: 901 [2021-08-29 22:23:16,629 INFO L226 Difference]: Without dead ends: 766 [2021-08-29 22:23:16,630 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:16,633 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.50ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:16,634 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 47 Invalid, 30 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 31.50ms Time] [2021-08-29 22:23:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-08-29 22:23:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2021-08-29 22:23:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 3.30718954248366) internal successors, (2530), 765 states have internal predecessors, (2530), 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 22:23:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 2530 transitions. [2021-08-29 22:23:16,661 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 2530 transitions. Word has length 12 [2021-08-29 22:23:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:16,661 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 2530 transitions. [2021-08-29 22:23:16,661 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 22:23:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 2530 transitions. [2021-08-29 22:23:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:23:16,663 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:16,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:16,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:23:16,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:16,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1868937433, now seen corresponding path program 1 times [2021-08-29 22:23:16,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:16,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993447036] [2021-08-29 22:23:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:16,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:16,763 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 22:23:16,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:16,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993447036] [2021-08-29 22:23:16,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993447036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:16,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:16,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:16,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713438064] [2021-08-29 22:23:16,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:16,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:16,769 INFO L87 Difference]: Start difference. First operand 766 states and 2530 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 22:23:16,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:16,853 INFO L93 Difference]: Finished difference Result 922 states and 2910 transitions. [2021-08-29 22:23:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:23:16,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 22:23:16,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:16,859 INFO L225 Difference]: With dead ends: 922 [2021-08-29 22:23:16,859 INFO L226 Difference]: Without dead ends: 790 [2021-08-29 22:23:16,861 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.71ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:16,865 INFO L928 BasicCegarLoop]: 24 mSDtfsCounter, 39 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.57ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:16,866 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 84 Invalid, 50 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 43.57ms Time] [2021-08-29 22:23:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-08-29 22:23:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 694. [2021-08-29 22:23:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.2698412698412698) internal successors, (2266), 693 states have internal predecessors, (2266), 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 22:23:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2266 transitions. [2021-08-29 22:23:16,891 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2266 transitions. Word has length 12 [2021-08-29 22:23:16,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:16,891 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2266 transitions. [2021-08-29 22:23:16,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 22:23:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2266 transitions. [2021-08-29 22:23:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:23:16,893 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:16,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:16,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:23:16,894 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1930882863, now seen corresponding path program 1 times [2021-08-29 22:23:16,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:16,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649236210] [2021-08-29 22:23:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:16,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:16,967 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 22:23:16,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:16,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649236210] [2021-08-29 22:23:16,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649236210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:16,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:16,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:16,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891303750] [2021-08-29 22:23:16,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:16,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:16,970 INFO L87 Difference]: Start difference. First operand 694 states and 2266 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 22:23:17,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,014 INFO L93 Difference]: Finished difference Result 994 states and 3204 transitions. [2021-08-29 22:23:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:17,015 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 22:23:17,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,018 INFO L225 Difference]: With dead ends: 994 [2021-08-29 22:23:17,019 INFO L226 Difference]: Without dead ends: 526 [2021-08-29 22:23:17,019 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.65ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:17,019 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.11ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,020 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 24.11ms Time] [2021-08-29 22:23:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-08-29 22:23:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2021-08-29 22:23:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.241904761904762) internal successors, (1702), 525 states have internal predecessors, (1702), 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 22:23:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1702 transitions. [2021-08-29 22:23:17,049 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1702 transitions. Word has length 13 [2021-08-29 22:23:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,049 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 1702 transitions. [2021-08-29 22:23:17,049 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 22:23:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1702 transitions. [2021-08-29 22:23:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:23:17,051 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:23:17,051 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2104491893, now seen corresponding path program 2 times [2021-08-29 22:23:17,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45180781] [2021-08-29 22:23:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,102 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 22:23:17,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45180781] [2021-08-29 22:23:17,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45180781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:17,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294966291] [2021-08-29 22:23:17,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:17,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:17,105 INFO L87 Difference]: Start difference. First operand 526 states and 1702 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 22:23:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,158 INFO L93 Difference]: Finished difference Result 682 states and 2100 transitions. [2021-08-29 22:23:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:23:17,159 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 22:23:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,163 INFO L225 Difference]: With dead ends: 682 [2021-08-29 22:23:17,163 INFO L226 Difference]: Without dead ends: 586 [2021-08-29 22:23:17,163 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.52ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:17,164 INFO L928 BasicCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.29ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,164 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 75 Invalid, 47 Unknown, 0 Unchecked, 0.91ms Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 29.29ms Time] [2021-08-29 22:23:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-08-29 22:23:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 490. [2021-08-29 22:23:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.198364008179959) internal successors, (1564), 489 states have internal predecessors, (1564), 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 22:23:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1564 transitions. [2021-08-29 22:23:17,182 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1564 transitions. Word has length 13 [2021-08-29 22:23:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,182 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1564 transitions. [2021-08-29 22:23:17,183 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 22:23:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1564 transitions. [2021-08-29 22:23:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:23:17,184 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,184 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:23:17,185 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash 131466755, now seen corresponding path program 1 times [2021-08-29 22:23:17,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611074903] [2021-08-29 22:23:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,217 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 22:23:17,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611074903] [2021-08-29 22:23:17,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611074903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:17,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503862730] [2021-08-29 22:23:17,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:17,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:17,219 INFO L87 Difference]: Start difference. First operand 490 states and 1564 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 22:23:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,264 INFO L93 Difference]: Finished difference Result 712 states and 2183 transitions. [2021-08-29 22:23:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:17,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 22:23:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,268 INFO L225 Difference]: With dead ends: 712 [2021-08-29 22:23:17,268 INFO L226 Difference]: Without dead ends: 502 [2021-08-29 22:23:17,268 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:17,269 INFO L928 BasicCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.14ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,269 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 34.14ms Time] [2021-08-29 22:23:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-08-29 22:23:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 430. [2021-08-29 22:23:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.090909090909091) internal successors, (1326), 429 states have internal predecessors, (1326), 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 22:23:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1326 transitions. [2021-08-29 22:23:17,283 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1326 transitions. Word has length 14 [2021-08-29 22:23:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,284 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1326 transitions. [2021-08-29 22:23:17,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 22:23:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1326 transitions. [2021-08-29 22:23:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:23:17,285 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:23:17,286 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1903921432, now seen corresponding path program 1 times [2021-08-29 22:23:17,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623729034] [2021-08-29 22:23:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,324 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 22:23:17,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623729034] [2021-08-29 22:23:17,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623729034] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:17,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168477232] [2021-08-29 22:23:17,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:17,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:17,326 INFO L87 Difference]: Start difference. First operand 430 states and 1326 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 22:23:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,373 INFO L93 Difference]: Finished difference Result 616 states and 1839 transitions. [2021-08-29 22:23:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:17,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 22:23:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,375 INFO L225 Difference]: With dead ends: 616 [2021-08-29 22:23:17,376 INFO L226 Difference]: Without dead ends: 310 [2021-08-29 22:23:17,376 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.22ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-29 22:23:17,376 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.73ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,377 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 57 Invalid, 38 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 26.73ms Time] [2021-08-29 22:23:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-08-29 22:23:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-08-29 22:23:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 2.896440129449838) internal successors, (895), 309 states have internal predecessors, (895), 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 22:23:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 895 transitions. [2021-08-29 22:23:17,386 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 895 transitions. Word has length 14 [2021-08-29 22:23:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 895 transitions. [2021-08-29 22:23:17,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 22:23:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 895 transitions. [2021-08-29 22:23:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:23:17,387 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,388 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 22:23:17,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash 466133286, now seen corresponding path program 1 times [2021-08-29 22:23:17,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802352686] [2021-08-29 22:23:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,429 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 22:23:17,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802352686] [2021-08-29 22:23:17,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802352686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:17,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444237105] [2021-08-29 22:23:17,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:17,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:17,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:17,431 INFO L87 Difference]: Start difference. First operand 310 states and 895 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,466 INFO L93 Difference]: Finished difference Result 377 states and 1011 transitions. [2021-08-29 22:23:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 22:23:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,468 INFO L225 Difference]: With dead ends: 377 [2021-08-29 22:23:17,468 INFO L226 Difference]: Without dead ends: 284 [2021-08-29 22:23:17,469 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:17,469 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.27ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,475 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 35 Invalid, 48 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 25.27ms Time] [2021-08-29 22:23:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-08-29 22:23:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-08-29 22:23:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.7385159010600706) internal successors, (775), 283 states have internal predecessors, (775), 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 22:23:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 775 transitions. [2021-08-29 22:23:17,483 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 775 transitions. Word has length 15 [2021-08-29 22:23:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,484 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 775 transitions. [2021-08-29 22:23:17,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:17,484 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 775 transitions. [2021-08-29 22:23:17,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 22:23:17,485 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 22:23:17,485 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2068885176, now seen corresponding path program 1 times [2021-08-29 22:23:17,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281182373] [2021-08-29 22:23:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,526 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 22:23:17,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281182373] [2021-08-29 22:23:17,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281182373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:23:17,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109565460] [2021-08-29 22:23:17,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:17,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:17,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:17,528 INFO L87 Difference]: Start difference. First operand 284 states and 775 transitions. Second operand has 5 states, 5 states have (on average 3.2) 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 22:23:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,572 INFO L93 Difference]: Finished difference Result 298 states and 737 transitions. [2021-08-29 22:23:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) 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 22:23:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,574 INFO L225 Difference]: With dead ends: 298 [2021-08-29 22:23:17,574 INFO L226 Difference]: Without dead ends: 223 [2021-08-29 22:23:17,575 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.87ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:17,575 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.85ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,575 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 61 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 34.85ms Time] [2021-08-29 22:23:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-08-29 22:23:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-08-29 22:23:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.4504504504504503) internal successors, (544), 222 states have internal predecessors, (544), 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 22:23:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 544 transitions. [2021-08-29 22:23:17,582 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 544 transitions. Word has length 16 [2021-08-29 22:23:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,582 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 544 transitions. [2021-08-29 22:23:17,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) 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 22:23:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 544 transitions. [2021-08-29 22:23:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 22:23:17,583 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 22:23:17,584 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,584 INFO L82 PathProgramCache]: Analyzing trace with hash -289436797, now seen corresponding path program 1 times [2021-08-29 22:23:17,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710391605] [2021-08-29 22:23:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,635 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 22:23:17,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710391605] [2021-08-29 22:23:17,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710391605] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 22:23:17,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386567642] [2021-08-29 22:23:17,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:23:17,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:23:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:17,638 INFO L87 Difference]: Start difference. First operand 223 states and 544 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 22:23:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,690 INFO L93 Difference]: Finished difference Result 207 states and 474 transitions. [2021-08-29 22:23:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:23:17,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-08-29 22:23:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,692 INFO L225 Difference]: With dead ends: 207 [2021-08-29 22:23:17,692 INFO L226 Difference]: Without dead ends: 169 [2021-08-29 22:23:17,692 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.25ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:17,693 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.65ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.93ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,693 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 74 Unknown, 0 Unchecked, 0.65ms Time], IncrementalHoareTripleChecker [15 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 41.93ms Time] [2021-08-29 22:23:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-08-29 22:23:17,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-08-29 22:23:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.3095238095238093) internal successors, (388), 168 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 388 transitions. [2021-08-29 22:23:17,698 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 388 transitions. Word has length 17 [2021-08-29 22:23:17,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,698 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 388 transitions. [2021-08-29 22:23:17,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 22:23:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 388 transitions. [2021-08-29 22:23:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:23:17,699 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 22:23:17,699 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,700 INFO L82 PathProgramCache]: Analyzing trace with hash -2098220685, now seen corresponding path program 1 times [2021-08-29 22:23:17,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571735631] [2021-08-29 22:23:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,755 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 22:23:17,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571735631] [2021-08-29 22:23:17,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571735631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 22:23:17,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427884736] [2021-08-29 22:23:17,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:23:17,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:23:17,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:17,758 INFO L87 Difference]: Start difference. First operand 169 states and 388 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,796 INFO L93 Difference]: Finished difference Result 209 states and 466 transitions. [2021-08-29 22:23:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:23:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-29 22:23:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,797 INFO L225 Difference]: With dead ends: 209 [2021-08-29 22:23:17,797 INFO L226 Difference]: Without dead ends: 136 [2021-08-29 22:23:17,798 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.33ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 22:23:17,798 INFO L928 BasicCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.33ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,799 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 79 Invalid, 48 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 26.33ms Time] [2021-08-29 22:23:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-29 22:23:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2021-08-29 22:23:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.122137404580153) internal successors, (278), 131 states have internal predecessors, (278), 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 22:23:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 278 transitions. [2021-08-29 22:23:17,802 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 278 transitions. Word has length 19 [2021-08-29 22:23:17,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,803 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 278 transitions. [2021-08-29 22:23:17,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 278 transitions. [2021-08-29 22:23:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:23:17,804 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,804 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 22:23:17,804 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,805 INFO L82 PathProgramCache]: Analyzing trace with hash -142225233, now seen corresponding path program 2 times [2021-08-29 22:23:17,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227723983] [2021-08-29 22:23:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,854 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 22:23:17,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227723983] [2021-08-29 22:23:17,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227723983] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 22:23:17,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344126345] [2021-08-29 22:23:17,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 22:23:17,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 22:23:17,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:17,856 INFO L87 Difference]: Start difference. First operand 132 states and 278 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:17,908 INFO L93 Difference]: Finished difference Result 121 states and 254 transitions. [2021-08-29 22:23:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 22:23:17,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-29 22:23:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:17,910 INFO L225 Difference]: With dead ends: 121 [2021-08-29 22:23:17,910 INFO L226 Difference]: Without dead ends: 72 [2021-08-29 22:23:17,910 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.60ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 22:23:17,911 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.03ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:17,911 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 40 Invalid, 81 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [19 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 42.03ms Time] [2021-08-29 22:23:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-29 22:23:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-08-29 22:23:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.028169014084507) internal successors, (144), 71 states have internal predecessors, (144), 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 22:23:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 144 transitions. [2021-08-29 22:23:17,914 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 144 transitions. Word has length 19 [2021-08-29 22:23:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:17,914 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 144 transitions. [2021-08-29 22:23:17,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 144 transitions. [2021-08-29 22:23:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 22:23:17,915 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:17,915 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:17,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 22:23:17,915 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:17,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1685666813, now seen corresponding path program 1 times [2021-08-29 22:23:17,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:17,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810527023] [2021-08-29 22:23:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:17,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:17,969 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 22:23:17,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:17,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810527023] [2021-08-29 22:23:17,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810527023] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:17,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:17,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:23:17,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443210481] [2021-08-29 22:23:17,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:17,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:17,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:17,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:17,971 INFO L87 Difference]: Start difference. First operand 72 states and 144 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 22:23:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:18,008 INFO L93 Difference]: Finished difference Result 71 states and 143 transitions. [2021-08-29 22:23:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-08-29 22:23:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:18,009 INFO L225 Difference]: With dead ends: 71 [2021-08-29 22:23:18,009 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:23:18,009 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.22ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:18,009 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.39ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:18,010 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 30 Unknown, 0 Unchecked, 0.32ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 17.39ms Time] [2021-08-29 22:23:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:23:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:23:18,011 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 22:23:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:23:18,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-08-29 22:23:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:18,011 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:23:18,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 22:23:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:23:18,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:23:18,018 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-08-29 22:23:18,018 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-08-29 22:23:18,018 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-08-29 22:23:18,018 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-08-29 22:23:18,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-08-29 22:23:18,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-29 22:23:18,022 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:23:18,023 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:23:18,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:23:18 BasicIcfg [2021-08-29 22:23:18,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:23:18,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:23:18,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:23:18,026 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:23:18,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:12" (3/4) ... [2021-08-29 22:23:18,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:23:18,034 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:23:18,034 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:23:18,035 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:23:18,035 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-08-29 22:23:18,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-08-29 22:23:18,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:23:18,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:18,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:18,064 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:23:18,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:23:18,065 INFO L158 Benchmark]: Toolchain (without parser) took 6384.53ms. Allocated memory was 54.5MB in the beginning and 136.3MB in the end (delta: 81.8MB). Free memory was 33.5MB in the beginning and 102.4MB in the end (delta: -68.9MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-08-29 22:23:18,065 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 34.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:18,065 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.44ms. Allocated memory is still 54.5MB. Free memory was 33.4MB in the beginning and 27.9MB in the end (delta: 5.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-08-29 22:23:18,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.05ms. Allocated memory is still 54.5MB. Free memory was 27.9MB in the beginning and 36.3MB in the end (delta: -8.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-08-29 22:23:18,066 INFO L158 Benchmark]: Boogie Preprocessor took 43.53ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 34.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:18,066 INFO L158 Benchmark]: RCFGBuilder took 310.46ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 24.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 22:23:18,066 INFO L158 Benchmark]: TraceAbstraction took 5364.97ms. Allocated memory was 54.5MB in the beginning and 136.3MB in the end (delta: 81.8MB). Free memory was 34.7MB in the beginning and 105.6MB in the end (delta: -70.9MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2021-08-29 22:23:18,067 INFO L158 Benchmark]: Witness Printer took 38.51ms. Allocated memory is still 136.3MB. Free memory was 105.6MB in the beginning and 102.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:18,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 34.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.44ms. Allocated memory is still 54.5MB. Free memory was 33.4MB in the beginning and 27.9MB in the end (delta: 5.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.05ms. Allocated memory is still 54.5MB. Free memory was 27.9MB in the beginning and 36.3MB in the end (delta: -8.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.53ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 34.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 310.46ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 24.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5364.97ms. Allocated memory was 54.5MB in the beginning and 136.3MB in the end (delta: 81.8MB). Free memory was 34.7MB in the beginning and 105.6MB in the end (delta: -70.9MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. * Witness Printer took 38.51ms. Allocated memory is still 136.3MB. Free memory was 105.6MB in the beginning and 102.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2881.77ms, 109 PlacesBefore, 39 PlacesAfterwards, 98 TransitionsBefore, 27 TransitionsAfterwards, 2114 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 82 TotalNumberOfCompositions, 3767 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2379, positive: 2284, positive conditional: 0, positive unconditional: 2284, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1544, positive: 1507, positive conditional: 0, positive unconditional: 1507, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1544, positive: 1492, positive conditional: 0, positive unconditional: 1492, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2379, positive: 777, positive conditional: 0, positive unconditional: 777, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5226.74ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 34.39ms, AutomataDifference: 871.84ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2973.83ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 453 SdHoareTripleChecker+Valid, 414.01ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 453 mSDsluCounter, 736 SdHoareTripleChecker+Invalid, 310.87ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 655 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 561 IncrementalHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 267 mSDtfsCounter, 561 mSolverCounterSat, 10.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 214.68ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=820occurred in iteration=2, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 279.41ms AutomataMinimizationTime, 14 MinimizatonAttempts, 400 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.18ms SsaConstructionTime, 199.03ms SatisfiabilityAnalysisTime, 600.71ms InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 819 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 22:23:18,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...