./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe021_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/safe021_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 691ed8575a91b9ee823b4f058564c132f43bde1d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:30:34,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:30:34,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:30:34,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:30:34,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:30:34,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:30:34,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:30:34,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:30:34,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:30:34,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:30:34,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:30:34,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:30:34,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:30:34,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:30:34,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:30:34,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:30:34,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:30:34,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:30:34,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:30:34,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:30:34,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:30:34,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:30:34,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:30:34,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:30:34,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:30:34,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:30:34,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:30:34,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:30:34,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:30:34,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:30:34,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:30:34,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:30:34,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:30:34,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:30:34,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:30:34,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:30:34,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:30:34,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:30:34,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:30:34,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:30:34,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:30:34,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:30:34,156 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:30:34,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:30:34,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:30:34,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:30:34,158 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:30:34,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:30:34,159 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:30:34,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:30:34,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:30:34,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:30:34,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:30:34,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:30:34,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:30:34,161 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:30:34,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:30:34,161 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:30:34,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:30:34,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:30:34,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:30:34,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:30:34,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:30:34,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:30:34,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:30:34,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:30:34,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:30:34,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:30:34,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:30:34,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:30:34,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:30:34,165 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 -> 691ed8575a91b9ee823b4f058564c132f43bde1d [2019-11-28 18:30:34,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:30:34,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:30:34,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:30:34,482 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:30:34,482 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:30:34,483 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2019-11-28 18:30:34,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8506b3c8d/d417696d7315439a85f1f412e265aea6/FLAG98bdb76bf [2019-11-28 18:30:35,119 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:30:35,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2019-11-28 18:30:35,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8506b3c8d/d417696d7315439a85f1f412e265aea6/FLAG98bdb76bf [2019-11-28 18:30:35,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8506b3c8d/d417696d7315439a85f1f412e265aea6 [2019-11-28 18:30:35,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:30:35,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:30:35,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:30:35,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:30:35,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:30:35,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:30:35" (1/1) ... [2019-11-28 18:30:35,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cd5bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:35, skipping insertion in model container [2019-11-28 18:30:35,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:30:35" (1/1) ... [2019-11-28 18:30:35,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:30:35,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:30:36,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:30:36,132 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:30:36,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:30:36,280 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:30:36,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36 WrapperNode [2019-11-28 18:30:36,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:30:36,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:30:36,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:30:36,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:30:36,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:30:36,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:30:36,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:30:36,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:30:36,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (1/1) ... [2019-11-28 18:30:36,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:30:36,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:30:36,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:30:36,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:30:36,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (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 18:30:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:30:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:30:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:30:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:30:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:30:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:30:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:30:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:30:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:30:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:30:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:30:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:30:36,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:30:36,461 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 18:30:36,820 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:30:36,820 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:30:36,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:30:36 BoogieIcfgContainer [2019-11-28 18:30:36,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:30:36,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:30:36,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:30:36,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:30:36,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:30:35" (1/3) ... [2019-11-28 18:30:36,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcdfab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:30:36, skipping insertion in model container [2019-11-28 18:30:36,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:30:36" (2/3) ... [2019-11-28 18:30:36,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcdfab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:30:36, skipping insertion in model container [2019-11-28 18:30:36,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:30:36" (3/3) ... [2019-11-28 18:30:36,831 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2019-11-28 18:30:36,841 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:30:36,841 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:30:36,848 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:30:36,849 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:30:36,878 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,879 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,879 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,880 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,880 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,881 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,881 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,881 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,882 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,882 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,883 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,883 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,883 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,884 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,884 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,884 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,885 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,885 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:30:36,910 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 18:30:36,933 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:30:36,933 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:30:36,933 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:30:36,934 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:30:36,934 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:30:36,934 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:30:36,934 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:30:36,935 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:30:36,949 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-11-28 18:30:36,952 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:30:36,995 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:30:36,996 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:30:37,003 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 18:30:37,006 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:30:37,023 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:30:37,024 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:30:37,026 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 18:30:37,028 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-11-28 18:30:37,029 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:30:38,326 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2019-11-28 18:30:38,432 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-11-28 18:30:38,616 INFO L206 etLargeBlockEncoding]: Checked pairs total: 442 [2019-11-28 18:30:38,616 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-11-28 18:30:38,620 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-11-28 18:30:38,637 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-11-28 18:30:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-11-28 18:30:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:30:38,651 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:30:38,653 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:30:38,654 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:30:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:30:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1632263201, now seen corresponding path program 1 times [2019-11-28 18:30:38,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:30:38,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462064937] [2019-11-28 18:30:38,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:30:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:30:39,110 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 18:30:39,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462064937] [2019-11-28 18:30:39,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:30:39,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:30:39,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897612909] [2019-11-28 18:30:39,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:30:39,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:30:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:30:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:30:39,141 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-11-28 18:30:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:30:39,216 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-11-28 18:30:39,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:30:39,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 18:30:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:30:39,232 INFO L225 Difference]: With dead ends: 58 [2019-11-28 18:30:39,232 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 18:30:39,236 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 18:30:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 18:30:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 18:30:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 18:30:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-11-28 18:30:39,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-11-28 18:30:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:30:39,283 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-11-28 18:30:39,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:30:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-11-28 18:30:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:30:39,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:30:39,284 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:30:39,285 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:30:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:30:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash -161820659, now seen corresponding path program 1 times [2019-11-28 18:30:39,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:30:39,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887271853] [2019-11-28 18:30:39,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:30:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:30:39,400 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 18:30:39,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887271853] [2019-11-28 18:30:39,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:30:39,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:30:39,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513967681] [2019-11-28 18:30:39,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:30:39,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:30:39,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:30:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:30:39,406 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-11-28 18:30:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:30:39,478 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-11-28 18:30:39,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:30:39,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 18:30:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:30:39,480 INFO L225 Difference]: With dead ends: 37 [2019-11-28 18:30:39,480 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 18:30:39,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:30:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 18:30:39,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 18:30:39,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 18:30:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-11-28 18:30:39,488 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-11-28 18:30:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:30:39,489 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-11-28 18:30:39,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:30:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-11-28 18:30:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:30:39,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:30:39,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:30:39,491 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:30:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:30:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash -721416518, now seen corresponding path program 1 times [2019-11-28 18:30:39,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:30:39,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245512520] [2019-11-28 18:30:39,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:30:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:30:39,592 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 18:30:39,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245512520] [2019-11-28 18:30:39,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:30:39,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:30:39,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840205514] [2019-11-28 18:30:39,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:30:39,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:30:39,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:30:39,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:30:39,594 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 6 states. [2019-11-28 18:30:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:30:39,689 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2019-11-28 18:30:39,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:30:39,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 18:30:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:30:39,691 INFO L225 Difference]: With dead ends: 28 [2019-11-28 18:30:39,691 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 18:30:39,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-28 18:30:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 18:30:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 18:30:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 18:30:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-11-28 18:30:39,697 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-11-28 18:30:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:30:39,697 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-11-28 18:30:39,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:30:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-11-28 18:30:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:30:39,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:30:39,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:30:39,699 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:30:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:30:39,700 INFO L82 PathProgramCache]: Analyzing trace with hash -889030495, now seen corresponding path program 1 times [2019-11-28 18:30:39,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:30:39,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286246054] [2019-11-28 18:30:39,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:30:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:30:39,848 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 18:30:39,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286246054] [2019-11-28 18:30:39,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:30:39,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:30:39,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881877886] [2019-11-28 18:30:39,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:30:39,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:30:39,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:30:39,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:30:39,851 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 5 states. [2019-11-28 18:30:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:30:39,884 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2019-11-28 18:30:39,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:30:39,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 18:30:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:30:39,886 INFO L225 Difference]: With dead ends: 29 [2019-11-28 18:30:39,886 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 18:30:39,887 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 18:30:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 18:30:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-28 18:30:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-28 18:30:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2019-11-28 18:30:39,894 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 11 [2019-11-28 18:30:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:30:39,896 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2019-11-28 18:30:39,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:30:39,896 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2019-11-28 18:30:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:30:39,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:30:39,897 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:30:39,897 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:30:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:30:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash -889376455, now seen corresponding path program 2 times [2019-11-28 18:30:39,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:30:39,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870548030] [2019-11-28 18:30:39,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:30:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:30:40,033 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 18:30:40,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870548030] [2019-11-28 18:30:40,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:30:40,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:30:40,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500047317] [2019-11-28 18:30:40,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:30:40,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:30:40,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:30:40,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:30:40,037 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2019-11-28 18:30:40,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:30:40,060 INFO L93 Difference]: Finished difference Result 23 states and 33 transitions. [2019-11-28 18:30:40,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:30:40,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:30:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:30:40,061 INFO L225 Difference]: With dead ends: 23 [2019-11-28 18:30:40,061 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:30:40,061 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:30:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:30:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:30:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:30:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:30:40,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 18:30:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:30:40,063 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:30:40,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:30:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:30:40,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:30:40,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:30:40 BasicIcfg [2019-11-28 18:30:40,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:30:40,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:30:40,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:30:40,069 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:30:40,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:30:36" (3/4) ... [2019-11-28 18:30:40,074 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:30:40,081 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:30:40,082 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:30:40,082 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:30:40,088 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 18:30:40,089 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:30:40,090 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:30:40,138 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:30:40,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:30:40,141 INFO L168 Benchmark]: Toolchain (without parser) took 4734.27 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.3 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -249.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:30:40,141 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:30:40,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -167.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:30:40,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.11 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 18:30:40,144 INFO L168 Benchmark]: Boogie Preprocessor took 26.16 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 18:30:40,144 INFO L168 Benchmark]: RCFGBuilder took 441.64 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-28 18:30:40,145 INFO L168 Benchmark]: TraceAbstraction took 3245.78 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -106.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:30:40,146 INFO L168 Benchmark]: Witness Printer took 70.00 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:30:40,149 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 869.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -167.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 71.11 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 26.16 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 441.64 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3245.78 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -106.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 70.00 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. 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, 7 FixpointIterations, 14 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 234 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 442 CheckedPairsTotal, 45 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 73 SDslu, 50 SDs, 0 SdLazy, 55 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1714 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...