./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/safe020_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 538cc2603fc8a261463ba2a472beab37ff2c86c6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:05:57,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:05:57,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:05:57,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:05:57,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:05:57,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:05:57,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:05:57,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:05:57,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:05:57,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:05:57,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:05:57,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:05:57,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:05:57,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:05:57,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:05:57,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:05:57,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:05:57,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:05:57,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:05:57,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:05:57,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:05:57,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:05:57,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:05:57,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:05:57,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:05:57,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:05:57,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:05:57,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:05:57,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:05:57,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:05:57,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:05:57,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:05:57,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:05:57,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:05:57,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:05:57,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:05:57,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:05:57,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:05:57,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:05:57,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:05:57,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:05:57,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:05:57,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:05:57,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:05:57,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:05:57,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:05:57,512 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:05:57,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:05:57,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:05:57,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:05:57,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:05:57,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:05:57,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:05:57,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:05:57,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:05:57,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:05:57,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:05:57,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:05:57,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:05:57,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:05:57,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:05:57,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:05:57,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:05:57,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:05:57,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:05:57,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:05:57,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:05:57,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:05:57,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:05:57,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:05:57,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:05:57,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 538cc2603fc8a261463ba2a472beab37ff2c86c6 [2020-10-20 03:05:57,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:05:57,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:05:57,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:05:57,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:05:57,747 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:05:57,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-10-20 03:05:57,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72410776/199ca8c7990f40a5aebef384b9ab5bc4/FLAG5137da769 [2020-10-20 03:05:58,428 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:05:58,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-10-20 03:05:58,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72410776/199ca8c7990f40a5aebef384b9ab5bc4/FLAG5137da769 [2020-10-20 03:05:58,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72410776/199ca8c7990f40a5aebef384b9ab5bc4 [2020-10-20 03:05:58,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:05:58,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:05:58,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:58,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:05:58,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:05:58,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:58" (1/1) ... [2020-10-20 03:05:58,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5636da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:58, skipping insertion in model container [2020-10-20 03:05:58,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:58" (1/1) ... [2020-10-20 03:05:58,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:05:58,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:05:59,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:59,306 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:05:59,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:59,475 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:05:59,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59 WrapperNode [2020-10-20 03:05:59,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:59,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:59,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:05:59,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:05:59,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:59,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:05:59,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:05:59,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:05:59,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... [2020-10-20 03:05:59,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:05:59,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:05:59,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:05:59,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:05:59,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:05:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:05:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:05:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:05:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:05:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:05:59,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:05:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:05:59,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:05:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:05:59,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:05:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:05:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:05:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:05:59,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:05:59,644 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:06:00,028 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:06:00,029 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:06:00,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:00 BoogieIcfgContainer [2020-10-20 03:06:00,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:06:00,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:06:00,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:06:00,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:06:00,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:05:58" (1/3) ... [2020-10-20 03:06:00,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6962eb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:00, skipping insertion in model container [2020-10-20 03:06:00,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:59" (2/3) ... [2020-10-20 03:06:00,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6962eb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:00, skipping insertion in model container [2020-10-20 03:06:00,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:00" (3/3) ... [2020-10-20 03:06:00,040 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-10-20 03:06:00,053 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:06:00,053 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:06:00,061 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:06:00,062 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:06:00,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,116 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,117 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,130 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,132 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,132 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,132 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:00,147 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:06:00,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:06:00,183 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:06:00,184 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:06:00,185 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:06:00,185 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:06:00,186 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:06:00,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:06:00,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:06:00,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:06:00,204 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:06:00,207 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-20 03:06:00,210 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-20 03:06:00,213 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-20 03:06:00,261 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-20 03:06:00,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:06:00,267 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-20 03:06:00,270 INFO L117 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-20 03:06:01,706 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-20 03:06:02,145 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-20 03:06:02,526 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-20 03:06:02,543 INFO L132 LiptonReduction]: Checked pairs total: 3056 [2020-10-20 03:06:02,543 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-20 03:06:02,550 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-10-20 03:06:02,573 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-20 03:06:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-20 03:06:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:06:02,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:02,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:02,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:02,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-10-20 03:06:02,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:02,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324538333] [2020-10-20 03:06:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:02,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324538333] [2020-10-20 03:06:02,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:02,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:02,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714401040] [2020-10-20 03:06:02,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:02,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:02,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:02,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:02,846 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-20 03:06:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:02,895 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-20 03:06:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:02,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:06:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:02,913 INFO L225 Difference]: With dead ends: 220 [2020-10-20 03:06:02,913 INFO L226 Difference]: Without dead ends: 172 [2020-10-20 03:06:02,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-20 03:06:02,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-20 03:06:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-20 03:06:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-20 03:06:02,979 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-20 03:06:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:02,981 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-20 03:06:02,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:02,982 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-20 03:06:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:06:02,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:02,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:02,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:06:02,984 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-10-20 03:06:02,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:02,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639731932] [2020-10-20 03:06:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:03,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639731932] [2020-10-20 03:06:03,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:03,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:03,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216305489] [2020-10-20 03:06:03,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:03,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:03,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:03,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:03,082 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-20 03:06:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:03,094 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-10-20 03:06:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:03,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:06:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:03,101 INFO L225 Difference]: With dead ends: 163 [2020-10-20 03:06:03,101 INFO L226 Difference]: Without dead ends: 163 [2020-10-20 03:06:03,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-20 03:06:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-20 03:06:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-20 03:06:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-10-20 03:06:03,134 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-10-20 03:06:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:03,134 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-10-20 03:06:03,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-10-20 03:06:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:06:03,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:03,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:03,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:06:03,139 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:03,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-10-20 03:06:03,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:03,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652560149] [2020-10-20 03:06:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:03,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652560149] [2020-10-20 03:06:03,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:03,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:03,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397987815] [2020-10-20 03:06:03,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:03,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:03,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:03,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:03,195 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-10-20 03:06:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:03,209 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-10-20 03:06:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:03,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 03:06:03,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:03,211 INFO L225 Difference]: With dead ends: 211 [2020-10-20 03:06:03,212 INFO L226 Difference]: Without dead ends: 175 [2020-10-20 03:06:03,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:03,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-20 03:06:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-10-20 03:06:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 03:06:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-10-20 03:06:03,227 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-10-20 03:06:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:03,227 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-10-20 03:06:03,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-10-20 03:06:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:06:03,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:03,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:03,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:06:03,229 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:03,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-10-20 03:06:03,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:03,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25543140] [2020-10-20 03:06:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:03,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25543140] [2020-10-20 03:06:03,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:03,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:03,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203031387] [2020-10-20 03:06:03,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:03,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:03,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:03,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:03,336 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-10-20 03:06:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:03,372 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-10-20 03:06:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:03,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 03:06:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:03,375 INFO L225 Difference]: With dead ends: 196 [2020-10-20 03:06:03,377 INFO L226 Difference]: Without dead ends: 124 [2020-10-20 03:06:03,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-20 03:06:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-20 03:06:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-20 03:06:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-10-20 03:06:03,396 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-10-20 03:06:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:03,397 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-10-20 03:06:03,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-10-20 03:06:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:06:03,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:03,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:03,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:06:03,400 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-10-20 03:06:03,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:03,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666043573] [2020-10-20 03:06:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:03,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666043573] [2020-10-20 03:06:03,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:03,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:03,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485323922] [2020-10-20 03:06:03,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:03,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:03,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:03,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:03,484 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 4 states. [2020-10-20 03:06:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:03,522 INFO L93 Difference]: Finished difference Result 144 states and 309 transitions. [2020-10-20 03:06:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:06:03,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:06:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:03,524 INFO L225 Difference]: With dead ends: 144 [2020-10-20 03:06:03,524 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 03:06:03,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 03:06:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-20 03:06:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 03:06:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 232 transitions. [2020-10-20 03:06:03,531 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 232 transitions. Word has length 11 [2020-10-20 03:06:03,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:03,531 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 232 transitions. [2020-10-20 03:06:03,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 232 transitions. [2020-10-20 03:06:03,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:06:03,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:03,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:03,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:06:03,533 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:03,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:03,533 INFO L82 PathProgramCache]: Analyzing trace with hash 693308811, now seen corresponding path program 1 times [2020-10-20 03:06:03,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:03,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625694567] [2020-10-20 03:06:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:03,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625694567] [2020-10-20 03:06:03,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:03,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:03,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312674991] [2020-10-20 03:06:03,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:06:03,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:06:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:03,612 INFO L87 Difference]: Start difference. First operand 108 states and 232 transitions. Second operand 5 states. [2020-10-20 03:06:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:03,667 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2020-10-20 03:06:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:06:03,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:06:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:03,669 INFO L225 Difference]: With dead ends: 108 [2020-10-20 03:06:03,669 INFO L226 Difference]: Without dead ends: 84 [2020-10-20 03:06:03,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:06:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-20 03:06:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-20 03:06:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-20 03:06:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-10-20 03:06:03,674 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 12 [2020-10-20 03:06:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:03,674 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-10-20 03:06:03,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:06:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-10-20 03:06:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:06:03,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:03,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:03,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:06:03,688 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:03,688 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-10-20 03:06:03,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:03,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640164121] [2020-10-20 03:06:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:03,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640164121] [2020-10-20 03:06:03,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:03,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:06:03,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51167676] [2020-10-20 03:06:03,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:06:03,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:03,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:06:03,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:06:03,801 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 6 states. [2020-10-20 03:06:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:03,860 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-10-20 03:06:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:06:03,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 03:06:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:03,861 INFO L225 Difference]: With dead ends: 80 [2020-10-20 03:06:03,861 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 03:06:03,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:06:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 03:06:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 03:06:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 03:06:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-10-20 03:06:03,864 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-10-20 03:06:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:03,864 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-10-20 03:06:03,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:06:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-10-20 03:06:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 03:06:03,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:03,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:03,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:06:03,866 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-10-20 03:06:03,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:03,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079442987] [2020-10-20 03:06:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:03,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079442987] [2020-10-20 03:06:03,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:03,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:03,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683950882] [2020-10-20 03:06:03,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:03,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:03,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:03,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:03,907 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-10-20 03:06:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:03,919 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-10-20 03:06:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:03,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-20 03:06:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:03,920 INFO L225 Difference]: With dead ends: 32 [2020-10-20 03:06:03,920 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:06:03,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:06:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:06:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:06:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:06:03,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-20 03:06:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:03,921 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:06:03,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:06:03,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:06:03,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:06:03,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:06:03 BasicIcfg [2020-10-20 03:06:03,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:06:03,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:06:03,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:06:03,927 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:06:03,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:00" (3/4) ... [2020-10-20 03:06:03,932 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:06:03,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:06:03,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:06:03,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:06:03,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:06:03,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:06:03,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:03,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:04,000 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:06:04,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:06:04,002 INFO L168 Benchmark]: Toolchain (without parser) took 5275.64 ms. Allocated memory was 40.4 MB in the beginning and 67.6 MB in the end (delta: 27.3 MB). Free memory was 16.8 MB in the beginning and 15.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,003 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.36 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 16.0 MB in the beginning and 25.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.23 ms. Allocated memory is still 43.0 MB. Free memory was 25.8 MB in the beginning and 23.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,004 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 ms. Allocated memory is still 43.0 MB. Free memory was 23.8 MB in the beginning and 22.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,005 INFO L168 Benchmark]: RCFGBuilder took 478.69 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 15.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,006 INFO L168 Benchmark]: TraceAbstraction took 3893.25 ms. Allocated memory was 45.1 MB in the beginning and 67.6 MB in the end (delta: 22.5 MB). Free memory was 14.7 MB in the beginning and 18.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,006 INFO L168 Benchmark]: Witness Printer took 73.70 ms. Allocated memory is still 67.6 MB. Free memory was 18.9 MB in the beginning and 15.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:04,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 738.36 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 16.0 MB in the beginning and 25.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.23 ms. Allocated memory is still 43.0 MB. Free memory was 25.8 MB in the beginning and 23.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.62 ms. Allocated memory is still 43.0 MB. Free memory was 23.8 MB in the beginning and 22.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 478.69 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 15.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3893.25 ms. Allocated memory was 45.1 MB in the beginning and 67.6 MB in the end (delta: 22.5 MB). Free memory was 14.7 MB in the beginning and 18.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.3 GB. * Witness Printer took 73.70 ms. Allocated memory is still 67.6 MB. Free memory was 18.9 MB in the beginning and 15.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 134 SDtfs, 110 SDslu, 162 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...