./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/sync01.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/sync01.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 07a2cff325945f1e2c5f5bc34031b7ae099cedf8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:57:11,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:57:11,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:57:11,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:57:11,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:57:11,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:57:11,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:57:11,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:57:11,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:57:11,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:57:11,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:57:11,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:57:11,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:57:11,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:57:11,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:57:11,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:57:11,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:57:11,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:57:11,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:57:11,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:57:11,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:57:11,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:57:11,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:57:11,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:57:11,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:57:11,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:57:11,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:57:11,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:57:11,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:57:11,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:57:11,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:57:11,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:57:11,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:57:11,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:57:11,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:57:11,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:57:11,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:57:11,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:57:11,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:57:11,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:57:11,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:57:11,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:57:11,417 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:57:11,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:57:11,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:57:11,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:57:11,424 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:57:11,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:57:11,425 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:57:11,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:57:11,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:57:11,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:57:11,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:57:11,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:57:11,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:57:11,427 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:57:11,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:57:11,427 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:57:11,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:57:11,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:57:11,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:57:11,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:57:11,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:57:11,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:57:11,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:57:11,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:57:11,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:57:11,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:57:11,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:57:11,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:57:11,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:57:11,435 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 -> 07a2cff325945f1e2c5f5bc34031b7ae099cedf8 [2019-11-28 17:57:11,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:57:11,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:57:11,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:57:11,784 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:57:11,786 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:57:11,787 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2019-11-28 17:57:11,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96a105d9a/a5f1beeeab7f4ff5a96cb81ab83753d5/FLAG49564bbdf [2019-11-28 17:57:12,414 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:57:12,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2019-11-28 17:57:12,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96a105d9a/a5f1beeeab7f4ff5a96cb81ab83753d5/FLAG49564bbdf [2019-11-28 17:57:12,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96a105d9a/a5f1beeeab7f4ff5a96cb81ab83753d5 [2019-11-28 17:57:12,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:57:12,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:57:12,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:57:12,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:57:12,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:57:12,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:57:12" (1/1) ... [2019-11-28 17:57:12,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9b4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:12, skipping insertion in model container [2019-11-28 17:57:12,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:57:12" (1/1) ... [2019-11-28 17:57:12,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:57:12,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:57:13,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:57:13,347 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:57:13,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:57:13,609 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:57:13,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13 WrapperNode [2019-11-28 17:57:13,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:57:13,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:57:13,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:57:13,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:57:13,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:57:13,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:57:13,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:57:13,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:57:13,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (1/1) ... [2019-11-28 17:57:13,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:57:13,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:57:13,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:57:13,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:57:13,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (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 17:57:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:57:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:57:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:57:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2019-11-28 17:57:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2019-11-28 17:57:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2019-11-28 17:57:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2019-11-28 17:57:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:57:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-28 17:57:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 17:57:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:57:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:57:13,849 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 17:57:14,277 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:57:14,277 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 17:57:14,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:14 BoogieIcfgContainer [2019-11-28 17:57:14,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:57:14,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:57:14,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:57:14,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:57:14,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:57:12" (1/3) ... [2019-11-28 17:57:14,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7695dc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:57:14, skipping insertion in model container [2019-11-28 17:57:14,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:13" (2/3) ... [2019-11-28 17:57:14,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7695dc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:57:14, skipping insertion in model container [2019-11-28 17:57:14,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:14" (3/3) ... [2019-11-28 17:57:14,289 INFO L109 eAbstractionObserver]: Analyzing ICFG sync01.i [2019-11-28 17:57:14,299 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 17:57:14,300 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:57:14,308 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:57:14,309 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 17:57:14,340 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,341 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,341 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,341 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,342 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,342 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,343 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,343 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,343 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,344 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,344 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,344 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,345 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,345 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,346 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,346 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,346 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,346 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,347 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,347 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,348 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,348 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,348 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,349 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,349 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,349 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:14,379 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 17:57:14,401 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:57:14,401 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:57:14,402 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:57:14,402 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:57:14,402 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:57:14,402 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:57:14,402 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:57:14,403 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:57:14,419 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions [2019-11-28 17:57:14,421 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions [2019-11-28 17:57:14,479 INFO L134 PetriNetUnfolder]: 6/91 cut-off events. [2019-11-28 17:57:14,479 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:57:14,486 INFO L76 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 91 events. 6/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs. 19/104 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2019-11-28 17:57:14,491 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions [2019-11-28 17:57:14,529 INFO L134 PetriNetUnfolder]: 6/91 cut-off events. [2019-11-28 17:57:14,530 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:57:14,531 INFO L76 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 91 events. 6/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs. 19/104 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2019-11-28 17:57:14,534 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 840 [2019-11-28 17:57:14,536 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 17:57:16,670 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-11-28 17:57:16,800 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-11-28 17:57:17,003 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2019-11-28 17:57:17,759 WARN L192 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2019-11-28 17:57:18,034 WARN L192 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-11-28 17:57:18,046 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2359 [2019-11-28 17:57:18,047 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2019-11-28 17:57:18,051 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 34 transitions [2019-11-28 17:57:18,073 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2019-11-28 17:57:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-11-28 17:57:18,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 17:57:18,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:18,089 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:18,090 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:18,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2002750161, now seen corresponding path program 1 times [2019-11-28 17:57:18,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:18,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220566859] [2019-11-28 17:57:18,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:18,330 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 17:57:18,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220566859] [2019-11-28 17:57:18,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:18,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:57:18,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257684098] [2019-11-28 17:57:18,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:57:18,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:18,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:57:18,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:57:18,359 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2019-11-28 17:57:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:18,384 INFO L93 Difference]: Finished difference Result 198 states and 455 transitions. [2019-11-28 17:57:18,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:57:18,385 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-28 17:57:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:18,402 INFO L225 Difference]: With dead ends: 198 [2019-11-28 17:57:18,402 INFO L226 Difference]: Without dead ends: 197 [2019-11-28 17:57:18,403 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:57:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-11-28 17:57:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2019-11-28 17:57:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-11-28 17:57:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 454 transitions. [2019-11-28 17:57:18,465 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 454 transitions. Word has length 15 [2019-11-28 17:57:18,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:18,466 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 454 transitions. [2019-11-28 17:57:18,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:57:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 454 transitions. [2019-11-28 17:57:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 17:57:18,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:18,470 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:18,471 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 68529071, now seen corresponding path program 1 times [2019-11-28 17:57:18,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:18,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092781071] [2019-11-28 17:57:18,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:18,574 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 17:57:18,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092781071] [2019-11-28 17:57:18,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:18,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:57:18,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778621928] [2019-11-28 17:57:18,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:57:18,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:18,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:57:18,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:57:18,578 INFO L87 Difference]: Start difference. First operand 197 states and 454 transitions. Second operand 3 states. [2019-11-28 17:57:18,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:18,602 INFO L93 Difference]: Finished difference Result 107 states and 223 transitions. [2019-11-28 17:57:18,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:57:18,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-28 17:57:18,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:18,605 INFO L225 Difference]: With dead ends: 107 [2019-11-28 17:57:18,605 INFO L226 Difference]: Without dead ends: 107 [2019-11-28 17:57:18,606 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:57:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-28 17:57:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-11-28 17:57:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-28 17:57:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 223 transitions. [2019-11-28 17:57:18,618 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 223 transitions. Word has length 21 [2019-11-28 17:57:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:18,618 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 223 transitions. [2019-11-28 17:57:18,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:57:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 223 transitions. [2019-11-28 17:57:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 17:57:18,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:18,621 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:18,621 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 865798443, now seen corresponding path program 2 times [2019-11-28 17:57:18,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:18,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924581186] [2019-11-28 17:57:18,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:18,745 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 17:57:18,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924581186] [2019-11-28 17:57:18,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:18,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:57:18,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602789754] [2019-11-28 17:57:18,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:57:18,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:18,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:57:18,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:57:18,748 INFO L87 Difference]: Start difference. First operand 107 states and 223 transitions. Second operand 5 states. [2019-11-28 17:57:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:18,827 INFO L93 Difference]: Finished difference Result 80 states and 137 transitions. [2019-11-28 17:57:18,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:57:18,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-28 17:57:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:18,829 INFO L225 Difference]: With dead ends: 80 [2019-11-28 17:57:18,829 INFO L226 Difference]: Without dead ends: 80 [2019-11-28 17:57:18,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:57:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-28 17:57:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2019-11-28 17:57:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-28 17:57:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 137 transitions. [2019-11-28 17:57:18,838 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 137 transitions. Word has length 21 [2019-11-28 17:57:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:18,838 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 137 transitions. [2019-11-28 17:57:18,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:57:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 137 transitions. [2019-11-28 17:57:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 17:57:18,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:18,840 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:18,841 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:18,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1902527711, now seen corresponding path program 3 times [2019-11-28 17:57:18,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:18,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854012263] [2019-11-28 17:57:18,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:18,943 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 17:57:18,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854012263] [2019-11-28 17:57:18,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:18,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 17:57:18,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593221520] [2019-11-28 17:57:18,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:57:18,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:57:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:57:18,946 INFO L87 Difference]: Start difference. First operand 80 states and 137 transitions. Second operand 7 states. [2019-11-28 17:57:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:19,046 INFO L93 Difference]: Finished difference Result 80 states and 136 transitions. [2019-11-28 17:57:19,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:57:19,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-28 17:57:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:19,048 INFO L225 Difference]: With dead ends: 80 [2019-11-28 17:57:19,048 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 17:57:19,049 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:57:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 17:57:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-28 17:57:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 17:57:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2019-11-28 17:57:19,053 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 21 [2019-11-28 17:57:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:19,054 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2019-11-28 17:57:19,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:57:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2019-11-28 17:57:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 17:57:19,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:19,055 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:19,055 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:19,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1563173147, now seen corresponding path program 1 times [2019-11-28 17:57:19,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:19,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526710663] [2019-11-28 17:57:19,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:19,146 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 17:57:19,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526710663] [2019-11-28 17:57:19,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:19,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:57:19,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248675899] [2019-11-28 17:57:19,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:57:19,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:57:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:57:19,148 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 7 states. [2019-11-28 17:57:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:19,221 INFO L93 Difference]: Finished difference Result 53 states and 82 transitions. [2019-11-28 17:57:19,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 17:57:19,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-28 17:57:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:19,222 INFO L225 Difference]: With dead ends: 53 [2019-11-28 17:57:19,222 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:57:19,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:57:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:57:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:57:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:57:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:57:19,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-11-28 17:57:19,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:19,224 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:57:19,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:57:19,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:57:19,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:57:19,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:57:19 BasicIcfg [2019-11-28 17:57:19,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:57:19,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:57:19,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:57:19,230 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:57:19,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:14" (3/4) ... [2019-11-28 17:57:19,236 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:57:19,247 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2019-11-28 17:57:19,248 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2019-11-28 17:57:19,259 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-28 17:57:19,259 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:57:19,260 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:57:19,333 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:57:19,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:57:19,340 INFO L168 Benchmark]: Toolchain (without parser) took 6664.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.2 MB). Free memory was 955.0 MB in the beginning and 926.5 MB in the end (delta: 28.5 MB). Peak memory consumption was 247.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:19,341 INFO L168 Benchmark]: CDTParser took 0.99 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 17:57:19,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 933.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -138.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:19,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.41 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 17:57:19,343 INFO L168 Benchmark]: Boogie Preprocessor took 63.25 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:19,343 INFO L168 Benchmark]: RCFGBuilder took 508.78 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:19,349 INFO L168 Benchmark]: TraceAbstraction took 4948.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 934.4 MB in the end (delta: 127.3 MB). Peak memory consumption was 200.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:19,350 INFO L168 Benchmark]: Witness Printer took 104.72 ms. Allocated memory is still 1.2 GB. Free memory was 934.4 MB in the beginning and 926.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:19,355 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 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 933.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -138.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.41 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 63.25 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 508.78 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4948.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 934.4 MB in the end (delta: 127.3 MB). Peak memory consumption was 200.7 MB. Max. memory is 11.5 GB. * Witness Printer took 104.72 ms. Allocated memory is still 1.2 GB. Free memory was 934.4 MB in the beginning and 926.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.6s, 91 ProgramPointsBefore, 34 ProgramPointsAfterwards, 91 TransitionsBefore, 34 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 435 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 29 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2359 CheckedPairsTotal, 66 TotalNumberOfCompositions - PositiveResult [Line: 947]: 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 3 procedures, 85 locations, 1 error locations. Result: SAFE, OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 112 SDslu, 161 SDs, 0 SdLazy, 119 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5876 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...