./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/16_peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/16_peterson.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe2a87bf03514f77a2923708fa633129c30ac7f0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:50:01,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:50:01,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:50:01,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:50:01,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:50:01,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:50:01,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:50:01,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:50:01,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:50:01,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:50:01,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:50:01,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:50:01,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:50:01,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:50:01,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:50:01,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:50:01,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:50:01,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:50:01,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:50:01,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:50:01,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:50:01,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:50:01,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:50:01,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:50:01,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:50:01,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:50:01,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:50:01,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:50:01,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:50:01,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:50:01,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:50:01,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:50:01,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:50:01,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:50:01,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:50:01,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:50:01,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:50:01,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:50:01,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:50:01,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:50:01,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:50:01,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:50:01,397 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:50:01,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:50:01,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:50:01,403 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:50:01,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:50:01,403 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:50:01,404 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:50:01,404 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:50:01,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:50:01,404 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:50:01,404 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:50:01,405 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:50:01,405 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:50:01,405 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:50:01,405 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:50:01,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:50:01,406 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:50:01,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:50:01,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:50:01,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:50:01,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:50:01,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:50:01,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:50:01,407 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:50:01,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:50:01,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:50:01,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:50:01,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:50:01,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:50:01,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:50:01,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:50:01,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:50:01,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:50:01,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:50:01,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:50:01,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:50:01,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:50:01,410 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan 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 -> Taipan 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 -> fe2a87bf03514f77a2923708fa633129c30ac7f0 [2019-11-26 02:50:01,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:50:01,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:50:01,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:50:01,564 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:50:01,568 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:50:01,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/../../sv-benchmarks/c/pthread-ext/16_peterson.i [2019-11-26 02:50:01,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/data/f85199723/c7410d48a7844d8c930a6f5f2175dc9f/FLAG9669818dd [2019-11-26 02:50:02,109 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:50:02,110 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/sv-benchmarks/c/pthread-ext/16_peterson.i [2019-11-26 02:50:02,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/data/f85199723/c7410d48a7844d8c930a6f5f2175dc9f/FLAG9669818dd [2019-11-26 02:50:02,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/data/f85199723/c7410d48a7844d8c930a6f5f2175dc9f [2019-11-26 02:50:02,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:50:02,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:50:02,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:50:02,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:50:02,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:50:02,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:50:02" (1/1) ... [2019-11-26 02:50:02,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d2da6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:02, skipping insertion in model container [2019-11-26 02:50:02,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:50:02" (1/1) ... [2019-11-26 02:50:02,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:50:02,704 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:50:03,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:50:03,050 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:50:03,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:50:03,149 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:50:03,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03 WrapperNode [2019-11-26 02:50:03,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:50:03,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:50:03,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:50:03,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:50:03,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:50:03,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:50:03,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:50:03,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:50:03,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... [2019-11-26 02:50:03,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:50:03,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:50:03,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:50:03,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:50:03,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/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 [2019-11-26 02:50:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-26 02:50:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-26 02:50:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:50:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:50:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:50:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:50:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:50:03,289 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:50:03,646 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:50:03,647 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-26 02:50:03,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:50:03 BoogieIcfgContainer [2019-11-26 02:50:03,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:50:03,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:50:03,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:50:03,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:50:03,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:50:02" (1/3) ... [2019-11-26 02:50:03,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c9514c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:50:03, skipping insertion in model container [2019-11-26 02:50:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:03" (2/3) ... [2019-11-26 02:50:03,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c9514c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:50:03, skipping insertion in model container [2019-11-26 02:50:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:50:03" (3/3) ... [2019-11-26 02:50:03,655 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2019-11-26 02:50:03,688 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,689 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,689 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,689 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,690 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,690 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,691 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,691 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,691 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,691 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,692 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,692 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,692 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,692 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,693 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,693 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,693 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,693 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:50:03,703 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:50:03,703 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:50:03,710 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-26 02:50:03,718 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-26 02:50:03,735 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:50:03,735 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:50:03,735 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:50:03,735 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:50:03,735 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:50:03,736 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:50:03,736 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:50:03,736 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:50:03,746 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 80 transitions [2019-11-26 02:50:03,782 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 276 states. [2019-11-26 02:50:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2019-11-26 02:50:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:50:03,791 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:50:03,791 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:50:03,792 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:50:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:50:03,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2077317057, now seen corresponding path program 1 times [2019-11-26 02:50:03,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:50:03,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296217647] [2019-11-26 02:50:03,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:50:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:50:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:50:03,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296217647] [2019-11-26 02:50:03,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:50:03,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:50:03,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784921708] [2019-11-26 02:50:03,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:50:03,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:50:03,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:50:03,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:50:03,944 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 2 states. [2019-11-26 02:50:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:50:03,967 INFO L93 Difference]: Finished difference Result 276 states and 540 transitions. [2019-11-26 02:50:03,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:50:03,969 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-11-26 02:50:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:50:03,982 INFO L225 Difference]: With dead ends: 276 [2019-11-26 02:50:03,982 INFO L226 Difference]: Without dead ends: 236 [2019-11-26 02:50:03,984 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 [2019-11-26 02:50:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-11-26 02:50:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2019-11-26 02:50:04,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-11-26 02:50:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 460 transitions. [2019-11-26 02:50:04,043 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 460 transitions. Word has length 19 [2019-11-26 02:50:04,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:50:04,044 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 460 transitions. [2019-11-26 02:50:04,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:50:04,044 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 460 transitions. [2019-11-26 02:50:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:50:04,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:50:04,045 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:50:04,045 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:50:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:50:04,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2077346848, now seen corresponding path program 1 times [2019-11-26 02:50:04,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:50:04,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604565394] [2019-11-26 02:50:04,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:50:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:50:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:50:04,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604565394] [2019-11-26 02:50:04,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:50:04,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:50:04,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126794044] [2019-11-26 02:50:04,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:50:04,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:50:04,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:50:04,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:50:04,119 INFO L87 Difference]: Start difference. First operand 236 states and 460 transitions. Second operand 3 states. [2019-11-26 02:50:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:50:04,186 INFO L93 Difference]: Finished difference Result 243 states and 453 transitions. [2019-11-26 02:50:04,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:50:04,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-26 02:50:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:50:04,192 INFO L225 Difference]: With dead ends: 243 [2019-11-26 02:50:04,192 INFO L226 Difference]: Without dead ends: 183 [2019-11-26 02:50:04,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:50:04,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-11-26 02:50:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2019-11-26 02:50:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-11-26 02:50:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 317 transitions. [2019-11-26 02:50:04,229 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 317 transitions. Word has length 19 [2019-11-26 02:50:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:50:04,229 INFO L462 AbstractCegarLoop]: Abstraction has 171 states and 317 transitions. [2019-11-26 02:50:04,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:50:04,230 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 317 transitions. [2019-11-26 02:50:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:50:04,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:50:04,231 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, 1, 1] [2019-11-26 02:50:04,231 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:50:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:50:04,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1030578003, now seen corresponding path program 1 times [2019-11-26 02:50:04,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:50:04,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246978271] [2019-11-26 02:50:04,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:50:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:50:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:50:04,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246978271] [2019-11-26 02:50:04,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:50:04,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:50:04,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105440915] [2019-11-26 02:50:04,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:50:04,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:50:04,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:50:04,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:50:04,276 INFO L87 Difference]: Start difference. First operand 171 states and 317 transitions. Second operand 3 states. [2019-11-26 02:50:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:50:04,307 INFO L93 Difference]: Finished difference Result 159 states and 285 transitions. [2019-11-26 02:50:04,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:50:04,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-26 02:50:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:50:04,309 INFO L225 Difference]: With dead ends: 159 [2019-11-26 02:50:04,309 INFO L226 Difference]: Without dead ends: 119 [2019-11-26 02:50:04,309 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:50:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-26 02:50:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-11-26 02:50:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-26 02:50:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 206 transitions. [2019-11-26 02:50:04,320 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 206 transitions. Word has length 23 [2019-11-26 02:50:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:50:04,320 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 206 transitions. [2019-11-26 02:50:04,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:50:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 206 transitions. [2019-11-26 02:50:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:50:04,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:50:04,322 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:50:04,322 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:50:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:50:04,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1219928969, now seen corresponding path program 1 times [2019-11-26 02:50:04,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:50:04,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388130069] [2019-11-26 02:50:04,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:50:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:50:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:50:04,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388130069] [2019-11-26 02:50:04,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:50:04,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:50:04,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641017522] [2019-11-26 02:50:04,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:50:04,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:50:04,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:50:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:50:04,420 INFO L87 Difference]: Start difference. First operand 119 states and 206 transitions. Second operand 4 states. [2019-11-26 02:50:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:50:04,459 INFO L93 Difference]: Finished difference Result 125 states and 217 transitions. [2019-11-26 02:50:04,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:50:04,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-11-26 02:50:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:50:04,460 INFO L225 Difference]: With dead ends: 125 [2019-11-26 02:50:04,461 INFO L226 Difference]: Without dead ends: 101 [2019-11-26 02:50:04,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:50:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-26 02:50:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2019-11-26 02:50:04,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-26 02:50:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 160 transitions. [2019-11-26 02:50:04,470 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 160 transitions. Word has length 28 [2019-11-26 02:50:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:50:04,470 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 160 transitions. [2019-11-26 02:50:04,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:50:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 160 transitions. [2019-11-26 02:50:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:50:04,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:50:04,472 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:50:04,472 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:50:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:50:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2006414549, now seen corresponding path program 2 times [2019-11-26 02:50:04,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:50:04,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734780313] [2019-11-26 02:50:04,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:50:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:50:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:50:04,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734780313] [2019-11-26 02:50:04,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:50:04,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:50:04,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207280285] [2019-11-26 02:50:04,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:50:04,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:50:04,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:50:04,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:50:04,549 INFO L87 Difference]: Start difference. First operand 101 states and 160 transitions. Second operand 4 states. [2019-11-26 02:50:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:50:04,572 INFO L93 Difference]: Finished difference Result 48 states and 76 transitions. [2019-11-26 02:50:04,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:50:04,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-11-26 02:50:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:50:04,573 INFO L225 Difference]: With dead ends: 48 [2019-11-26 02:50:04,573 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:50:04,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:50:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:50:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:50:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:50:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:50:04,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-11-26 02:50:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:50:04,574 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:50:04,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:50:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:50:04,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:50:04,577 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:50:04,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:50:04 BasicIcfg [2019-11-26 02:50:04,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:50:04,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:50:04,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:50:04,579 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:50:04,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:50:03" (3/4) ... [2019-11-26 02:50:04,583 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:50:04,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-26 02:50:04,593 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 02:50:04,593 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:50:04,594 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:50:04,661 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8b93304e-cee6-4829-8996-6ff461b7d442/bin/utaipan/witness.graphml [2019-11-26 02:50:04,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:50:04,664 INFO L168 Benchmark]: Toolchain (without parser) took 2021.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -62.3 MB). Peak memory consumption was 73.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:04,664 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:50:04,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:04,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.72 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:04,666 INFO L168 Benchmark]: Boogie Preprocessor took 24.61 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. [2019-11-26 02:50:04,666 INFO L168 Benchmark]: RCFGBuilder took 433.30 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:04,667 INFO L168 Benchmark]: TraceAbstraction took 929.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:04,668 INFO L168 Benchmark]: Witness Printer took 82.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:04,671 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 507.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.72 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.61 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 433.30 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 929.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 11.5 GB. * Witness Printer took 82.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 82 locations, 5 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 240 SDtfs, 89 SDslu, 120 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3642 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...