./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i -s /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/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 1b685bacbbd5837a4875c8642768e5522c2d7b85 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:07,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:07,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:07,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:07,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:07,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:07,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:07,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:07,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:07,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:07,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:07,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:07,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:07,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:07,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:07,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:07,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:07,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:07,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:07,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:07,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:07,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:07,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:07,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:07,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:07,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:07,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:07,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:07,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:07,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:07,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:07,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:07,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:07,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:07,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:07,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:07,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:07,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:07,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:07,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:07,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:07,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:07,472 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:07,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:07,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:07,473 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:07,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:07,473 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:07,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:07,474 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:07,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:07,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:07,474 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:07,474 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:07,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:07,475 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:07,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:07,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:07,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:07,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:07,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:07,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:07,476 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:07,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:07,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:07,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:07,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:07,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:07,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:07,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:07,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:07,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:07,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:07,479 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:07,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:07,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:07,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:07,479 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/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/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 -> 1b685bacbbd5837a4875c8642768e5522c2d7b85 [2019-10-22 11:26:07,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:07,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:07,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:07,518 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:07,518 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:07,519 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i [2019-10-22 11:26:07,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/data/b486bdf80/f26571c67ed74736bcfe6eec1fb500bc/FLAGef83197ce [2019-10-22 11:26:08,005 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:08,005 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/sv-benchmarks/c/pthread-atomic/time_var_mutex.i [2019-10-22 11:26:08,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/data/b486bdf80/f26571c67ed74736bcfe6eec1fb500bc/FLAGef83197ce [2019-10-22 11:26:08,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/data/b486bdf80/f26571c67ed74736bcfe6eec1fb500bc [2019-10-22 11:26:08,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:08,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:08,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:08,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:08,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:08,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:08,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08, skipping insertion in model container [2019-10-22 11:26:08,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:08,373 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:08,414 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:08,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:08,887 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:08,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:08,999 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:09,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08 WrapperNode [2019-10-22 11:26:09,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:09,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:09,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:09,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:09,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:09,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:09,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:09,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:09,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... [2019-10-22 11:26:09,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:09,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:09,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:09,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:09,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/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 [2019-10-22 11:26:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2019-10-22 11:26:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2019-10-22 11:26:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:26:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2019-10-22 11:26:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2019-10-22 11:26:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:26:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-10-22 11:26:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:26:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:09,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:09,166 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 11:26:09,552 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:09,553 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:26:09,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:09 BoogieIcfgContainer [2019-10-22 11:26:09,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:09,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:09,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:09,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:09,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:08" (1/3) ... [2019-10-22 11:26:09,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6228263d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:09, skipping insertion in model container [2019-10-22 11:26:09,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:08" (2/3) ... [2019-10-22 11:26:09,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6228263d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:09, skipping insertion in model container [2019-10-22 11:26:09,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:09" (3/3) ... [2019-10-22 11:26:09,561 INFO L109 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2019-10-22 11:26:09,587 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,587 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,587 WARN L315 ript$VariableManager]: TermVariabe Thread0_allocator_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,587 WARN L315 ript$VariableManager]: TermVariabe Thread0_allocator_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,588 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,588 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,588 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,588 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,589 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,589 WARN L315 ript$VariableManager]: TermVariabe |Thread0_allocator_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,589 WARN L315 ript$VariableManager]: TermVariabe |Thread1_de_allocator_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,590 WARN L315 ript$VariableManager]: TermVariabe |Thread1_de_allocator_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,590 WARN L315 ript$VariableManager]: TermVariabe Thread1_de_allocator_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,590 WARN L315 ript$VariableManager]: TermVariabe Thread1_de_allocator_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,590 WARN L315 ript$VariableManager]: TermVariabe |Thread1_de_allocator_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,590 WARN L315 ript$VariableManager]: TermVariabe |Thread1_de_allocator_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,591 WARN L315 ript$VariableManager]: TermVariabe |Thread1_de_allocator_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,591 WARN L315 ript$VariableManager]: TermVariabe |Thread1_de_allocator_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:09,603 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:26:09,603 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:09,610 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 11:26:09,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 11:26:09,636 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:09,636 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:09,636 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:09,636 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:09,636 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:09,637 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:09,637 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:09,637 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:09,645 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 76 transitions [2019-10-22 11:26:09,693 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 785 states. [2019-10-22 11:26:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-22 11:26:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:09,703 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:09,704 INFO L380 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, 1, 1, 1, 1, 1] [2019-10-22 11:26:09,705 INFO L410 AbstractCegarLoop]: === Iteration 1 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:09,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:09,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2091080517, now seen corresponding path program 1 times [2019-10-22 11:26:09,718 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:09,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126844289] [2019-10-22 11:26:09,719 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:09,719 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:09,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:09,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126844289] [2019-10-22 11:26:09,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:09,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:09,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757489198] [2019-10-22 11:26:09,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:09,957 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:09,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:09,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:09,972 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-22 11:26:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:10,041 INFO L93 Difference]: Finished difference Result 785 states and 1902 transitions. [2019-10-22 11:26:10,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:10,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-10-22 11:26:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:10,062 INFO L225 Difference]: With dead ends: 785 [2019-10-22 11:26:10,062 INFO L226 Difference]: Without dead ends: 704 [2019-10-22 11:26:10,063 INFO L600 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 [2019-10-22 11:26:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-22 11:26:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2019-10-22 11:26:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-22 11:26:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1701 transitions. [2019-10-22 11:26:10,150 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1701 transitions. Word has length 33 [2019-10-22 11:26:10,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:10,150 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 1701 transitions. [2019-10-22 11:26:10,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1701 transitions. [2019-10-22 11:26:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:26:10,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:10,152 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:10,153 INFO L410 AbstractCegarLoop]: === Iteration 2 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1255430162, now seen corresponding path program 1 times [2019-10-22 11:26:10,153 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:10,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994390587] [2019-10-22 11:26:10,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:10,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994390587] [2019-10-22 11:26:10,199 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:10,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:10,200 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632952996] [2019-10-22 11:26:10,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:10,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:10,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:10,202 INFO L87 Difference]: Start difference. First operand 704 states and 1701 transitions. Second operand 3 states. [2019-10-22 11:26:10,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:10,224 INFO L93 Difference]: Finished difference Result 713 states and 1672 transitions. [2019-10-22 11:26:10,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:10,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 11:26:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:10,228 INFO L225 Difference]: With dead ends: 713 [2019-10-22 11:26:10,228 INFO L226 Difference]: Without dead ends: 611 [2019-10-22 11:26:10,229 INFO L600 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 [2019-10-22 11:26:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-10-22 11:26:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 566. [2019-10-22 11:26:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-10-22 11:26:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1348 transitions. [2019-10-22 11:26:10,251 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1348 transitions. Word has length 36 [2019-10-22 11:26:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:10,252 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 1348 transitions. [2019-10-22 11:26:10,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1348 transitions. [2019-10-22 11:26:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:10,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:10,254 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:10,254 INFO L410 AbstractCegarLoop]: === Iteration 3 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:10,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2020199094, now seen corresponding path program 1 times [2019-10-22 11:26:10,255 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:10,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340033839] [2019-10-22 11:26:10,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:10,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340033839] [2019-10-22 11:26:10,312 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:10,312 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:10,312 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769600244] [2019-10-22 11:26:10,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:10,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:10,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:10,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:10,313 INFO L87 Difference]: Start difference. First operand 566 states and 1348 transitions. Second operand 3 states. [2019-10-22 11:26:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:10,335 INFO L93 Difference]: Finished difference Result 527 states and 1219 transitions. [2019-10-22 11:26:10,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:10,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-22 11:26:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:10,339 INFO L225 Difference]: With dead ends: 527 [2019-10-22 11:26:10,340 INFO L226 Difference]: Without dead ends: 362 [2019-10-22 11:26:10,340 INFO L600 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 [2019-10-22 11:26:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2019-10-22 11:26:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2019-10-22 11:26:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2019-10-22 11:26:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 786 transitions. [2019-10-22 11:26:10,350 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 786 transitions. Word has length 38 [2019-10-22 11:26:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:10,351 INFO L462 AbstractCegarLoop]: Abstraction has 362 states and 786 transitions. [2019-10-22 11:26:10,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 786 transitions. [2019-10-22 11:26:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-22 11:26:10,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:10,353 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:10,353 INFO L410 AbstractCegarLoop]: === Iteration 4 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash -435415078, now seen corresponding path program 1 times [2019-10-22 11:26:10,354 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:10,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666540061] [2019-10-22 11:26:10,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:10,421 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666540061] [2019-10-22 11:26:10,421 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:10,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:10,421 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232749594] [2019-10-22 11:26:10,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:10,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:10,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:10,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:10,425 INFO L87 Difference]: Start difference. First operand 362 states and 786 transitions. Second operand 3 states. [2019-10-22 11:26:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:10,442 INFO L93 Difference]: Finished difference Result 362 states and 774 transitions. [2019-10-22 11:26:10,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:10,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-22 11:26:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:10,444 INFO L225 Difference]: With dead ends: 362 [2019-10-22 11:26:10,444 INFO L226 Difference]: Without dead ends: 302 [2019-10-22 11:26:10,445 INFO L600 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 [2019-10-22 11:26:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-10-22 11:26:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2019-10-22 11:26:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2019-10-22 11:26:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 634 transitions. [2019-10-22 11:26:10,453 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 634 transitions. Word has length 46 [2019-10-22 11:26:10,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:10,453 INFO L462 AbstractCegarLoop]: Abstraction has 302 states and 634 transitions. [2019-10-22 11:26:10,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 634 transitions. [2019-10-22 11:26:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-22 11:26:10,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:10,455 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:10,455 INFO L410 AbstractCegarLoop]: === Iteration 5 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1334135258, now seen corresponding path program 2 times [2019-10-22 11:26:10,455 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:10,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955415368] [2019-10-22 11:26:10,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:10,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:10,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955415368] [2019-10-22 11:26:10,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:10,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:10,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366364547] [2019-10-22 11:26:10,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:10,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:10,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:10,500 INFO L87 Difference]: Start difference. First operand 302 states and 634 transitions. Second operand 4 states. [2019-10-22 11:26:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:10,526 INFO L93 Difference]: Finished difference Result 149 states and 298 transitions. [2019-10-22 11:26:10,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:10,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2019-10-22 11:26:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:10,527 INFO L225 Difference]: With dead ends: 149 [2019-10-22 11:26:10,527 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:26:10,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:10,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:26:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:26:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:26:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:26:10,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2019-10-22 11:26:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:10,528 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:26:10,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:26:10,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:26:10,531 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:26:10,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:10 BasicIcfg [2019-10-22 11:26:10,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:10,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:10,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:10,534 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:10,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:09" (3/4) ... [2019-10-22 11:26:10,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:26:10,549 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure allocator [2019-10-22 11:26:10,549 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure de_allocator [2019-10-22 11:26:10,553 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-10-22 11:26:10,553 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:26:10,589 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dcd73e29-bed0-448e-85bb-6ad31bb31e2d/bin/utaipan/witness.graphml [2019-10-22 11:26:10,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:10,591 INFO L168 Benchmark]: Toolchain (without parser) took 2234.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 939.1 MB in the beginning and 1.0 GB in the end (delta: -61.5 MB). Peak memory consumption was 114.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:10,592 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:10,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:10,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.45 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. [2019-10-22 11:26:10,593 INFO L168 Benchmark]: Boogie Preprocessor took 29.62 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. [2019-10-22 11:26:10,593 INFO L168 Benchmark]: RCFGBuilder took 473.24 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:10,594 INFO L168 Benchmark]: TraceAbstraction took 977.74 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: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:10,594 INFO L168 Benchmark]: Witness Printer took 56.21 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:10,596 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 642.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.45 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 29.62 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 473.24 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 977.74 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: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 11.5 GB. * Witness Printer took 56.21 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 688]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 102 locations, 4 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 338 SDtfs, 131 SDslu, 232 SDs, 0 SdLazy, 32 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=785occurred 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, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 11932 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...