./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.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_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i -s /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 081edffa49857299d91f7754d14f9c862a699261 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:29,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:29,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:29,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:29,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:29,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:29,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:29,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:29,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:29,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:29,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:29,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:29,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:29,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:29,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:29,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:29,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:29,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:29,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:29,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:29,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:29,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:29,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:29,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:29,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:29,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:29,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:29,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:29,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:29,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:29,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:29,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:29,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:29,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:29,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:29,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:29,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:29,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:29,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:29,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:29,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:29,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:48:29,438 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:29,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:29,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:29,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:29,450 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:29,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:29,450 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:29,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:29,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:29,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:29,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:29,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:29,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:29,452 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:29,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:29,452 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:29,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:29,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:29,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:29,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:29,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:29,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:29,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:29,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:29,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:29,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:29,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:48:29,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:29,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 081edffa49857299d91f7754d14f9c862a699261 [2019-11-25 08:48:29,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:29,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:29,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:29,650 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:29,650 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:29,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2019-11-25 08:48:29,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/data/b56a04ed6/18af69fe95494c7db17799a74ca0c3c9/FLAGe3c75ec51 [2019-11-25 08:48:30,100 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:30,101 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2019-11-25 08:48:30,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/data/b56a04ed6/18af69fe95494c7db17799a74ca0c3c9/FLAGe3c75ec51 [2019-11-25 08:48:30,434 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/data/b56a04ed6/18af69fe95494c7db17799a74ca0c3c9 [2019-11-25 08:48:30,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:30,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:30,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:30,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:30,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:30,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bb2851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30, skipping insertion in model container [2019-11-25 08:48:30,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:30,508 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:30,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:30,967 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:31,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:31,112 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:31,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31 WrapperNode [2019-11-25 08:48:31,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:31,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:31,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:31,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:31,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:31,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:31,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:31,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:31,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... [2019-11-25 08:48:31,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:31,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:31,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:31,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:31,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/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 [2019-11-25 08:48:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-25 08:48:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-25 08:48:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-25 08:48:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-25 08:48:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:31,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:31,256 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:48:31,389 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-25 08:48:31,403 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-25 08:48:31,516 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-25 08:48:31,519 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-25 08:48:31,617 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:31,617 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:48:31,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:31 BoogieIcfgContainer [2019-11-25 08:48:31,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:31,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:31,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:31,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:31,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:30" (1/3) ... [2019-11-25 08:48:31,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ded3e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:31, skipping insertion in model container [2019-11-25 08:48:31,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:31" (2/3) ... [2019-11-25 08:48:31,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ded3e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:31, skipping insertion in model container [2019-11-25 08:48:31,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:31" (3/3) ... [2019-11-25 08:48:31,625 INFO L109 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2019-11-25 08:48:31,663 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,663 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,663 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,664 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,664 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,664 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,665 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,665 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,665 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,665 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,665 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,666 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,666 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,666 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,666 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,667 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,667 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,667 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:31,692 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:48:31,692 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:31,700 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:48:31,709 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:48:31,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:31,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:31,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:31,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:31,726 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:31,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:31,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:31,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:31,737 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 91 transitions [2019-11-25 08:48:44,860 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 66433 states. [2019-11-25 08:48:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 66433 states. [2019-11-25 08:48:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:48:44,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:44,871 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:44,871 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:44,876 INFO L82 PathProgramCache]: Analyzing trace with hash 686730806, now seen corresponding path program 1 times [2019-11-25 08:48:44,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:44,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303665875] [2019-11-25 08:48:44,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:45,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303665875] [2019-11-25 08:48:45,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:45,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:48:45,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161382178] [2019-11-25 08:48:45,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:45,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:45,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:45,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:45,134 INFO L87 Difference]: Start difference. First operand 66433 states. Second operand 4 states. [2019-11-25 08:48:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:45,397 INFO L93 Difference]: Finished difference Result 7493 states and 34355 transitions. [2019-11-25 08:48:45,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:48:45,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-25 08:48:45,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:45,512 INFO L225 Difference]: With dead ends: 7493 [2019-11-25 08:48:45,512 INFO L226 Difference]: Without dead ends: 7493 [2019-11-25 08:48:45,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:45,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2019-11-25 08:48:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7493. [2019-11-25 08:48:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7493 states. [2019-11-25 08:48:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7493 states to 7493 states and 34355 transitions. [2019-11-25 08:48:46,052 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 34355 transitions. Word has length 17 [2019-11-25 08:48:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:46,053 INFO L462 AbstractCegarLoop]: Abstraction has 7493 states and 34355 transitions. [2019-11-25 08:48:46,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 34355 transitions. [2019-11-25 08:48:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:48:46,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:46,058 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] [2019-11-25 08:48:46,058 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:46,059 INFO L82 PathProgramCache]: Analyzing trace with hash -411863275, now seen corresponding path program 1 times [2019-11-25 08:48:46,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:46,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872782420] [2019-11-25 08:48:46,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:46,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872782420] [2019-11-25 08:48:46,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:46,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:48:46,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341238957] [2019-11-25 08:48:46,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:48:46,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:48:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:46,127 INFO L87 Difference]: Start difference. First operand 7493 states and 34355 transitions. Second operand 3 states. [2019-11-25 08:48:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:46,194 INFO L93 Difference]: Finished difference Result 1333 states and 4323 transitions. [2019-11-25 08:48:46,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:46,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-25 08:48:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:46,212 INFO L225 Difference]: With dead ends: 1333 [2019-11-25 08:48:46,213 INFO L226 Difference]: Without dead ends: 1333 [2019-11-25 08:48:46,214 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 [2019-11-25 08:48:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2019-11-25 08:48:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1061. [2019-11-25 08:48:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2019-11-25 08:48:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 3467 transitions. [2019-11-25 08:48:46,264 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 3467 transitions. Word has length 25 [2019-11-25 08:48:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:46,264 INFO L462 AbstractCegarLoop]: Abstraction has 1061 states and 3467 transitions. [2019-11-25 08:48:46,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:48:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 3467 transitions. [2019-11-25 08:48:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-25 08:48:46,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:46,271 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] [2019-11-25 08:48:46,272 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:46,272 INFO L82 PathProgramCache]: Analyzing trace with hash -969985002, now seen corresponding path program 1 times [2019-11-25 08:48:46,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:46,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635328823] [2019-11-25 08:48:46,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:46,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635328823] [2019-11-25 08:48:46,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:46,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:48:46,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262420627] [2019-11-25 08:48:46,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:48:46,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:46,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:48:46,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:48:46,408 INFO L87 Difference]: Start difference. First operand 1061 states and 3467 transitions. Second operand 6 states. [2019-11-25 08:48:46,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:46,596 INFO L93 Difference]: Finished difference Result 2053 states and 6671 transitions. [2019-11-25 08:48:46,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:48:46,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-25 08:48:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:46,615 INFO L225 Difference]: With dead ends: 2053 [2019-11-25 08:48:46,616 INFO L226 Difference]: Without dead ends: 2053 [2019-11-25 08:48:46,616 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:48:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2019-11-25 08:48:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1781. [2019-11-25 08:48:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1781 states. [2019-11-25 08:48:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 5815 transitions. [2019-11-25 08:48:46,684 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 5815 transitions. Word has length 27 [2019-11-25 08:48:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:46,685 INFO L462 AbstractCegarLoop]: Abstraction has 1781 states and 5815 transitions. [2019-11-25 08:48:46,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:48:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 5815 transitions. [2019-11-25 08:48:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-25 08:48:46,688 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:46,689 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:46,689 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:46,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:46,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1151586878, now seen corresponding path program 2 times [2019-11-25 08:48:46,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:46,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239430706] [2019-11-25 08:48:46,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:46,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239430706] [2019-11-25 08:48:46,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349177377] [2019-11-25 08:48:46,859 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:46,945 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:48:46,945 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:46,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:48:46,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:47,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:47,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-11-25 08:48:47,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465995094] [2019-11-25 08:48:47,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:48:47,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:47,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:48:47,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:48:47,150 INFO L87 Difference]: Start difference. First operand 1781 states and 5815 transitions. Second operand 15 states. [2019-11-25 08:48:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:47,665 INFO L93 Difference]: Finished difference Result 3581 states and 11617 transitions. [2019-11-25 08:48:47,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:48:47,666 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-11-25 08:48:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:47,703 INFO L225 Difference]: With dead ends: 3581 [2019-11-25 08:48:47,703 INFO L226 Difference]: Without dead ends: 3581 [2019-11-25 08:48:47,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:48:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2019-11-25 08:48:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 2501. [2019-11-25 08:48:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2019-11-25 08:48:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 8163 transitions. [2019-11-25 08:48:47,809 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 8163 transitions. Word has length 32 [2019-11-25 08:48:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:47,810 INFO L462 AbstractCegarLoop]: Abstraction has 2501 states and 8163 transitions. [2019-11-25 08:48:47,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:48:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 8163 transitions. [2019-11-25 08:48:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-25 08:48:47,816 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:47,816 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:48,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:48,021 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1868313322, now seen corresponding path program 3 times [2019-11-25 08:48:48,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:48,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706213772] [2019-11-25 08:48:48,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:48,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706213772] [2019-11-25 08:48:48,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467299627] [2019-11-25 08:48:48,205 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:48,290 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:48:48,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:48,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:48:48,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:48,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:48,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-11-25 08:48:48,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26783579] [2019-11-25 08:48:48,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:48:48,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:48:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:48:48,517 INFO L87 Difference]: Start difference. First operand 2501 states and 8163 transitions. Second operand 19 states. [2019-11-25 08:48:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:49,151 INFO L93 Difference]: Finished difference Result 4029 states and 13109 transitions. [2019-11-25 08:48:49,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-25 08:48:49,152 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 37 [2019-11-25 08:48:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:49,166 INFO L225 Difference]: With dead ends: 4029 [2019-11-25 08:48:49,167 INFO L226 Difference]: Without dead ends: 4029 [2019-11-25 08:48:49,167 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2019-11-25 08:48:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2019-11-25 08:48:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 3941. [2019-11-25 08:48:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3941 states. [2019-11-25 08:48:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 12903 transitions. [2019-11-25 08:48:49,507 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 12903 transitions. Word has length 37 [2019-11-25 08:48:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:49,508 INFO L462 AbstractCegarLoop]: Abstraction has 3941 states and 12903 transitions. [2019-11-25 08:48:49,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:48:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 12903 transitions. [2019-11-25 08:48:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-25 08:48:49,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:49,515 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:49,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:49,719 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:49,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:49,719 INFO L82 PathProgramCache]: Analyzing trace with hash -131671746, now seen corresponding path program 4 times [2019-11-25 08:48:49,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:49,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62192310] [2019-11-25 08:48:49,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-25 08:48:49,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62192310] [2019-11-25 08:48:49,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669692386] [2019-11-25 08:48:49,877 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:49,959 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:48:49,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:49,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:48:49,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-25 08:48:50,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:50,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-11-25 08:48:50,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747644994] [2019-11-25 08:48:50,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:48:50,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:50,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:48:50,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:48:50,205 INFO L87 Difference]: Start difference. First operand 3941 states and 12903 transitions. Second operand 19 states. [2019-11-25 08:48:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:50,713 INFO L93 Difference]: Finished difference Result 3941 states and 12859 transitions. [2019-11-25 08:48:50,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:48:50,713 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2019-11-25 08:48:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:50,726 INFO L225 Difference]: With dead ends: 3941 [2019-11-25 08:48:50,726 INFO L226 Difference]: Without dead ends: 3941 [2019-11-25 08:48:50,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2019-11-25 08:48:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2019-11-25 08:48:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3941. [2019-11-25 08:48:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3941 states. [2019-11-25 08:48:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 12859 transitions. [2019-11-25 08:48:50,832 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 12859 transitions. Word has length 42 [2019-11-25 08:48:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:50,832 INFO L462 AbstractCegarLoop]: Abstraction has 3941 states and 12859 transitions. [2019-11-25 08:48:50,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:48:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 12859 transitions. [2019-11-25 08:48:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-25 08:48:50,841 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:50,841 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:51,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:51,051 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1997724138, now seen corresponding path program 5 times [2019-11-25 08:48:51,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:51,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179963063] [2019-11-25 08:48:51,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:48:51,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179963063] [2019-11-25 08:48:51,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493057605] [2019-11-25 08:48:51,212 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:51,268 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-11-25 08:48:51,268 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:51,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:48:51,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:48:51,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:51,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-11-25 08:48:51,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313896251] [2019-11-25 08:48:51,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:48:51,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:51,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:48:51,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:48:51,446 INFO L87 Difference]: Start difference. First operand 3941 states and 12859 transitions. Second operand 19 states. [2019-11-25 08:48:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:51,906 INFO L93 Difference]: Finished difference Result 3853 states and 12609 transitions. [2019-11-25 08:48:51,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:48:51,906 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2019-11-25 08:48:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:51,907 INFO L225 Difference]: With dead ends: 3853 [2019-11-25 08:48:51,907 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:48:51,907 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2019-11-25 08:48:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:48:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:48:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:48:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:48:51,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-11-25 08:48:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:51,908 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:51,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:48:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:51,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:48:52,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:52,114 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:48:52,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:52 BasicIcfg [2019-11-25 08:48:52,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:52,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:52,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:52,117 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:52,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:31" (3/4) ... [2019-11-25 08:48:52,120 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:48:52,126 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-11-25 08:48:52,127 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-25 08:48:52,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-25 08:48:52,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:48:52,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:48:52,185 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_686adb14-87c9-4849-8af3-77af0ed140b5/bin/uautomizer/witness.graphml [2019-11-25 08:48:52,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:52,187 INFO L168 Benchmark]: Toolchain (without parser) took 21749.26 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.2 GB). Free memory was 944.8 MB in the beginning and 1.5 GB in the end (delta: -538.8 MB). Peak memory consumption was 678.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:52,188 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:52,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -235.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:52,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:52,189 INFO L168 Benchmark]: Boogie Preprocessor took 33.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:52,189 INFO L168 Benchmark]: RCFGBuilder took 416.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:52,190 INFO L168 Benchmark]: TraceAbstraction took 20496.50 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: -339.1 MB). Peak memory consumption was 675.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:52,190 INFO L168 Benchmark]: Witness Printer took 69.42 ms. Allocated memory is still 2.2 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:52,193 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 674.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -235.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 416.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20496.50 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: -339.1 MB). Peak memory consumption was 675.4 MB. Max. memory is 11.5 GB. * Witness Printer took 69.42 ms. Allocated memory is still 2.2 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 706]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 706]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 706]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 706]: 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 9 procedures, 95 locations, 4 error locations. Result: SAFE, OverallTime: 20.3s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 621 SDtfs, 1402 SDslu, 4448 SDs, 0 SdLazy, 2007 SolverSat, 208 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66433occurred 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: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1712 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 69356 SizeOfPredicates, 44 NumberOfNonLiveVariables, 428 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 30/200 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...