./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/safe000_tso.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4cd3fa2c6cedf9544f915bd660e63c66749a95b9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:24:54,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:24:54,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:24:54,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:24:54,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:24:54,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:24:54,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:24:54,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:24:54,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:24:54,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:24:54,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:24:54,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:24:54,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:24:54,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:24:54,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:24:54,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:24:54,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:24:54,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:24:54,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:24:54,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:24:54,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:24:54,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:24:54,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:24:54,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:24:54,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:24:54,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:24:54,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:24:54,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:24:54,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:24:54,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:24:54,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:24:54,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:24:54,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:24:54,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:24:54,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:24:54,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:24:54,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:24:54,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:24:54,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:24:54,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:24:54,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:24:54,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:24:54,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:24:54,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:24:54,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:24:54,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:24:54,428 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:24:54,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:24:54,429 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:24:54,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:24:54,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:24:54,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:24:54,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:24:54,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:24:54,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:24:54,432 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:24:54,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:24:54,434 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:24:54,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:24:54,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:24:54,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:24:54,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:24:54,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:24:54,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:24:54,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:24:54,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:24:54,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:24:54,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:24:54,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:24:54,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:24:54,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:24:54,439 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(__VERIFIER_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 -> 4cd3fa2c6cedf9544f915bd660e63c66749a95b9 [2019-11-28 18:24:54,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:24:54,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:24:54,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:24:54,802 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:24:54,804 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:24:54,805 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i [2019-11-28 18:24:54,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abfb5c30/7a399308bfa543149fac124ce6eed160/FLAG96a265e55 [2019-11-28 18:24:55,445 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:24:55,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i [2019-11-28 18:24:55,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abfb5c30/7a399308bfa543149fac124ce6eed160/FLAG96a265e55 [2019-11-28 18:24:55,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abfb5c30/7a399308bfa543149fac124ce6eed160 [2019-11-28 18:24:55,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:24:55,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:24:55,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:24:55,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:24:55,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:24:55,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:24:55" (1/1) ... [2019-11-28 18:24:55,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d05c468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:55, skipping insertion in model container [2019-11-28 18:24:55,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:24:55" (1/1) ... [2019-11-28 18:24:55,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:24:55,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:24:56,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:24:56,422 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:24:56,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:24:56,584 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:24:56,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56 WrapperNode [2019-11-28 18:24:56,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:24:56,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:24:56,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:24:56,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:24:56,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:24:56,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:24:56,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:24:56,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:24:56,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (1/1) ... [2019-11-28 18:24:56,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:24:56,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:24:56,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:24:56,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:24:56,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (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 [2019-11-28 18:24:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:24:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:24:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:24:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:24:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:24:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:24:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:24:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:24:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:24:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:24:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:24:56,733 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:24:57,101 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:24:57,102 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:24:57,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:24:57 BoogieIcfgContainer [2019-11-28 18:24:57,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:24:57,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:24:57,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:24:57,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:24:57,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:24:55" (1/3) ... [2019-11-28 18:24:57,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a6b3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:24:57, skipping insertion in model container [2019-11-28 18:24:57,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:56" (2/3) ... [2019-11-28 18:24:57,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a6b3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:24:57, skipping insertion in model container [2019-11-28 18:24:57,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:24:57" (3/3) ... [2019-11-28 18:24:57,116 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2019-11-28 18:24:57,127 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:24:57,127 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:24:57,134 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:24:57,135 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:24:57,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,170 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,170 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,170 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,171 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,171 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,171 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,172 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,172 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,172 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,173 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,173 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,173 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,174 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,174 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,174 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,174 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:57,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 18:24:57,216 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:24:57,216 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:24:57,216 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:24:57,216 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:24:57,217 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:24:57,217 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:24:57,217 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:24:57,217 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:24:57,230 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-11-28 18:24:57,233 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:24:57,297 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:24:57,299 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:24:57,308 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:24:57,312 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:24:57,333 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:24:57,333 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:24:57,335 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:24:57,336 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-11-28 18:24:57,338 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:24:58,717 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-28 18:24:58,835 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-11-28 18:24:58,911 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-11-28 18:24:58,912 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-11-28 18:24:58,916 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-11-28 18:24:58,929 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-11-28 18:24:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-11-28 18:24:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:24:58,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:58,940 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:58,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:58,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-11-28 18:24:58,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:58,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55911344] [2019-11-28 18:24:58,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:24:59,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55911344] [2019-11-28 18:24:59,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:59,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:24:59,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320579325] [2019-11-28 18:24:59,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:24:59,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:59,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:24:59,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:59,272 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-11-28 18:24:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:59,331 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-11-28 18:24:59,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:24:59,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 18:24:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:59,351 INFO L225 Difference]: With dead ends: 58 [2019-11-28 18:24:59,352 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 18:24:59,357 INFO L630 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 [2019-11-28 18:24:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 18:24:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 18:24:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 18:24:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-11-28 18:24:59,411 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-11-28 18:24:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:59,411 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-11-28 18:24:59,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:24:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-11-28 18:24:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:24:59,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:59,416 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:59,416 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:59,417 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-11-28 18:24:59,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:59,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308934096] [2019-11-28 18:24:59,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:24:59,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308934096] [2019-11-28 18:24:59,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:59,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:24:59,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386508285] [2019-11-28 18:24:59,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:24:59,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:59,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:24:59,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:59,550 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-11-28 18:24:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:59,580 INFO L93 Difference]: Finished difference Result 44 states and 71 transitions. [2019-11-28 18:24:59,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:24:59,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 18:24:59,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:59,582 INFO L225 Difference]: With dead ends: 44 [2019-11-28 18:24:59,582 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 18:24:59,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 18:24:59,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-11-28 18:24:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 18:24:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2019-11-28 18:24:59,591 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 9 [2019-11-28 18:24:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:59,591 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2019-11-28 18:24:59,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:24:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2019-11-28 18:24:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:24:59,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:59,592 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:59,593 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:59,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1542655070, now seen corresponding path program 1 times [2019-11-28 18:24:59,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:59,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553880510] [2019-11-28 18:24:59,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:24:59,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553880510] [2019-11-28 18:24:59,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:59,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:24:59,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286905996] [2019-11-28 18:24:59,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:24:59,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:59,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:24:59,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:59,696 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 4 states. [2019-11-28 18:24:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:59,720 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2019-11-28 18:24:59,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:24:59,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 18:24:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:59,727 INFO L225 Difference]: With dead ends: 39 [2019-11-28 18:24:59,728 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 18:24:59,729 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 18:24:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2019-11-28 18:24:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 18:24:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 56 transitions. [2019-11-28 18:24:59,742 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 56 transitions. Word has length 10 [2019-11-28 18:24:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:59,743 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 56 transitions. [2019-11-28 18:24:59,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:24:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2019-11-28 18:24:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:24:59,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:59,746 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:59,747 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:59,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1542654109, now seen corresponding path program 1 times [2019-11-28 18:24:59,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:59,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826072713] [2019-11-28 18:24:59,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:24:59,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826072713] [2019-11-28 18:24:59,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:59,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:24:59,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388720445] [2019-11-28 18:24:59,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:24:59,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:59,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:24:59,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:24:59,922 INFO L87 Difference]: Start difference. First operand 34 states and 56 transitions. Second operand 5 states. [2019-11-28 18:24:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:59,951 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2019-11-28 18:24:59,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:24:59,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-28 18:24:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:59,952 INFO L225 Difference]: With dead ends: 38 [2019-11-28 18:24:59,952 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 18:24:59,953 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:24:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 18:24:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 18:24:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 18:24:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2019-11-28 18:24:59,958 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 10 [2019-11-28 18:24:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:59,959 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-11-28 18:24:59,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:24:59,959 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2019-11-28 18:24:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:24:59,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:59,961 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:59,961 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:59,962 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-11-28 18:24:59,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:59,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6384138] [2019-11-28 18:24:59,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:25:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:25:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:25:00,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6384138] [2019-11-28 18:25:00,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:25:00,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:25:00,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246136970] [2019-11-28 18:25:00,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:25:00,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:25:00,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:25:00,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:25:00,053 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand 4 states. [2019-11-28 18:25:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:25:00,075 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2019-11-28 18:25:00,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:25:00,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:25:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:25:00,076 INFO L225 Difference]: With dead ends: 19 [2019-11-28 18:25:00,077 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:25:00,077 INFO L630 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 [2019-11-28 18:25:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:25:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:25:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:25:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:25:00,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 18:25:00,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:25:00,078 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:25:00,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:25:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:25:00,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:25:00,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:25:00 BasicIcfg [2019-11-28 18:25:00,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:25:00,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:25:00,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:25:00,096 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:25:00,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:24:57" (3/4) ... [2019-11-28 18:25:00,101 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:25:00,107 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:25:00,107 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:25:00,107 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:25:00,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 18:25:00,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:25:00,129 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:25:00,179 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:25:00,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:25:00,182 INFO L168 Benchmark]: Toolchain (without parser) took 4404.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -236.9 MB). Peak memory consumption was 293.1 MB. Max. memory is 11.5 GB. [2019-11-28 18:25:00,182 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:25:00,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -150.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:25:00,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:25:00,184 INFO L168 Benchmark]: Boogie Preprocessor took 27.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:25:00,185 INFO L168 Benchmark]: RCFGBuilder took 439.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-11-28 18:25:00,186 INFO L168 Benchmark]: TraceAbstraction took 2984.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 822.5 MB in the end (delta: 263.5 MB). Peak memory consumption was 263.5 MB. Max. memory is 11.5 GB. [2019-11-28 18:25:00,187 INFO L168 Benchmark]: Witness Printer took 90.71 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 822.5 MB in the beginning and 1.2 GB in the end (delta: -374.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-11-28 18:25:00,191 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 807.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -150.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 439.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2984.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 822.5 MB in the end (delta: 263.5 MB). Peak memory consumption was 263.5 MB. Max. memory is 11.5 GB. * Witness Printer took 90.71 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 822.5 MB in the beginning and 1.2 GB in the end (delta: -374.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 52 SDslu, 36 SDs, 0 SdLazy, 39 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 2245 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...