./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/sigma.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_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/sigma.i -s /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/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 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:46:08,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:08,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:08,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:08,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:08,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:08,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:08,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:08,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:08,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:08,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:08,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:08,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:08,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:08,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:08,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:08,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:08,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:08,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:08,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:08,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:08,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:08,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:08,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:08,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:08,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:08,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:08,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:08,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:08,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:08,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:08,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:08,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:08,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:08,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:08,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:08,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:08,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:08,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:08,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:08,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:08,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:08,255 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:08,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:08,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:08,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:08,261 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:08,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:08,262 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:08,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:08,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:08,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:08,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:08,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:08,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:08,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:08,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:08,265 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:08,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:08,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:08,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:08,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:08,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:08,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:08,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:08,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:08,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:08,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:08,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:08,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:08,272 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_205476e2-d9b1-42ba-8895-f2e78da7ff1c/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 -> 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d [2019-11-25 08:46:08,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:08,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:08,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:08,427 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:08,429 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:08,430 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/../../sv-benchmarks/c/pthread/sigma.i [2019-11-25 08:46:08,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/data/85905805a/036790c72cc744768dfa72f903c69e15/FLAG3569cdfb1 [2019-11-25 08:46:09,026 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:09,027 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/sv-benchmarks/c/pthread/sigma.i [2019-11-25 08:46:09,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/data/85905805a/036790c72cc744768dfa72f903c69e15/FLAG3569cdfb1 [2019-11-25 08:46:09,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/data/85905805a/036790c72cc744768dfa72f903c69e15 [2019-11-25 08:46:09,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:09,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:09,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:09,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:09,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:09,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:09" (1/1) ... [2019-11-25 08:46:09,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d7a8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:09, skipping insertion in model container [2019-11-25 08:46:09,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:09" (1/1) ... [2019-11-25 08:46:09,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:09,569 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:10,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:10,124 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:10,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:10,334 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:10,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10 WrapperNode [2019-11-25 08:46:10,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:10,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:10,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:10,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:10,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:10,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:10,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:10,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:10,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:10,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:10,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:10,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:10,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/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 08:46:10,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:46:10,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:46:10,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:46:10,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:46:10,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:46:10,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:46:10,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:46:10,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-25 08:46:10,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-25 08:46:10,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:10,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:10,492 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 08:46:10,834 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:10,834 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-25 08:46:10,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:10 BoogieIcfgContainer [2019-11-25 08:46:10,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:10,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:10,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:10,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:10,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:09" (1/3) ... [2019-11-25 08:46:10,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf6f195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:10, skipping insertion in model container [2019-11-25 08:46:10,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (2/3) ... [2019-11-25 08:46:10,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf6f195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:10, skipping insertion in model container [2019-11-25 08:46:10,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:10" (3/3) ... [2019-11-25 08:46:10,842 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-11-25 08:46:10,869 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,870 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,870 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,870 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,870 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,871 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,871 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,871 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,871 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,872 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,872 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,872 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,872 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,873 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,873 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,873 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,873 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,874 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:10,891 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:46:10,891 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:10,897 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:10,904 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:10,921 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:10,921 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:10,921 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:10,921 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:10,921 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:10,921 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:10,921 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:10,921 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:10,931 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 85 transitions [2019-11-25 08:46:11,464 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7898 states. [2019-11-25 08:46:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states. [2019-11-25 08:46:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:46:11,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:11,477 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:11,478 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:11,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:11,485 INFO L82 PathProgramCache]: Analyzing trace with hash -937654746, now seen corresponding path program 1 times [2019-11-25 08:46:11,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:11,495 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089204059] [2019-11-25 08:46:11,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:11,742 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 08:46:11,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089204059] [2019-11-25 08:46:11,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:11,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:46:11,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867646579] [2019-11-25 08:46:11,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:46:11,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:11,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:46:11,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:11,765 INFO L87 Difference]: Start difference. First operand 7898 states. Second operand 2 states. [2019-11-25 08:46:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:11,899 INFO L93 Difference]: Finished difference Result 7898 states and 23969 transitions. [2019-11-25 08:46:11,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:46:11,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-11-25 08:46:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:11,977 INFO L225 Difference]: With dead ends: 7898 [2019-11-25 08:46:11,977 INFO L226 Difference]: Without dead ends: 5849 [2019-11-25 08:46:11,981 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2019-11-25 08:46:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5849. [2019-11-25 08:46:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2019-11-25 08:46:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 17528 transitions. [2019-11-25 08:46:12,379 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 17528 transitions. Word has length 31 [2019-11-25 08:46:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:12,379 INFO L462 AbstractCegarLoop]: Abstraction has 5849 states and 17528 transitions. [2019-11-25 08:46:12,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:46:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 17528 transitions. [2019-11-25 08:46:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:46:12,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:12,381 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:12,382 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:12,382 INFO L82 PathProgramCache]: Analyzing trace with hash -218464121, now seen corresponding path program 1 times [2019-11-25 08:46:12,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:12,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330956750] [2019-11-25 08:46:12,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:12,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330956750] [2019-11-25 08:46:12,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:12,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:46:12,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053909300] [2019-11-25 08:46:12,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:46:12,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:12,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:46:12,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:12,551 INFO L87 Difference]: Start difference. First operand 5849 states and 17528 transitions. Second operand 5 states. [2019-11-25 08:46:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:12,709 INFO L93 Difference]: Finished difference Result 4683 states and 12717 transitions. [2019-11-25 08:46:12,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:46:12,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-25 08:46:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:12,743 INFO L225 Difference]: With dead ends: 4683 [2019-11-25 08:46:12,743 INFO L226 Difference]: Without dead ends: 4683 [2019-11-25 08:46:12,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:46:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2019-11-25 08:46:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4094. [2019-11-25 08:46:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4094 states. [2019-11-25 08:46:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 11323 transitions. [2019-11-25 08:46:12,875 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 11323 transitions. Word has length 31 [2019-11-25 08:46:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:12,875 INFO L462 AbstractCegarLoop]: Abstraction has 4094 states and 11323 transitions. [2019-11-25 08:46:12,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:46:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 11323 transitions. [2019-11-25 08:46:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-25 08:46:12,888 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:12,888 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2019-11-25 08:46:12,888 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:12,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:12,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1473441971, now seen corresponding path program 1 times [2019-11-25 08:46:12,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:12,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123726959] [2019-11-25 08:46:12,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:13,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123726959] [2019-11-25 08:46:13,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934412566] [2019-11-25 08:46:13,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/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 08:46:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:13,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:13,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:46:13,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:13,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-11-25 08:46:13,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925222273] [2019-11-25 08:46:13,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-25 08:46:13,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:13,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-25 08:46:13,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:46:13,409 INFO L87 Difference]: Start difference. First operand 4094 states and 11323 transitions. Second operand 18 states. [2019-11-25 08:46:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:13,657 INFO L93 Difference]: Finished difference Result 4199 states and 11552 transitions. [2019-11-25 08:46:13,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:46:13,658 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2019-11-25 08:46:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:13,687 INFO L225 Difference]: With dead ends: 4199 [2019-11-25 08:46:13,687 INFO L226 Difference]: Without dead ends: 4199 [2019-11-25 08:46:13,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:46:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2019-11-25 08:46:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4084. [2019-11-25 08:46:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4084 states. [2019-11-25 08:46:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 11300 transitions. [2019-11-25 08:46:13,896 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 11300 transitions. Word has length 63 [2019-11-25 08:46:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:13,897 INFO L462 AbstractCegarLoop]: Abstraction has 4084 states and 11300 transitions. [2019-11-25 08:46:13,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-25 08:46:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 11300 transitions. [2019-11-25 08:46:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-25 08:46:13,907 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:13,908 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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] [2019-11-25 08:46:14,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:14,111 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:14,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,112 INFO L82 PathProgramCache]: Analyzing trace with hash 414543156, now seen corresponding path program 1 times [2019-11-25 08:46:14,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:14,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134380519] [2019-11-25 08:46:14,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:14,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134380519] [2019-11-25 08:46:14,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719621003] [2019-11-25 08:46:14,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/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 08:46:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:14,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:46:14,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:46:14,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:14,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2019-11-25 08:46:14,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259892026] [2019-11-25 08:46:14,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-25 08:46:14,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:14,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-25 08:46:14,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:46:14,739 INFO L87 Difference]: Start difference. First operand 4084 states and 11300 transitions. Second operand 22 states. [2019-11-25 08:46:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:15,012 INFO L93 Difference]: Finished difference Result 4034 states and 11145 transitions. [2019-11-25 08:46:15,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:46:15,012 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2019-11-25 08:46:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:15,035 INFO L225 Difference]: With dead ends: 4034 [2019-11-25 08:46:15,035 INFO L226 Difference]: Without dead ends: 4034 [2019-11-25 08:46:15,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-11-25 08:46:15,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2019-11-25 08:46:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 4034. [2019-11-25 08:46:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4034 states. [2019-11-25 08:46:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 11145 transitions. [2019-11-25 08:46:15,141 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 11145 transitions. Word has length 75 [2019-11-25 08:46:15,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:15,141 INFO L462 AbstractCegarLoop]: Abstraction has 4034 states and 11145 transitions. [2019-11-25 08:46:15,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-25 08:46:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 11145 transitions. [2019-11-25 08:46:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-25 08:46:15,151 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:15,151 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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] [2019-11-25 08:46:15,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:15,354 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash 900589660, now seen corresponding path program 1 times [2019-11-25 08:46:15,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:15,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776019702] [2019-11-25 08:46:15,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:15,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776019702] [2019-11-25 08:46:15,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130270879] [2019-11-25 08:46:15,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/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 08:46:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:46:16,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:16,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 26 [2019-11-25 08:46:16,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288325242] [2019-11-25 08:46:16,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-25 08:46:16,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:16,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-25 08:46:16,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2019-11-25 08:46:16,016 INFO L87 Difference]: Start difference. First operand 4034 states and 11145 transitions. Second operand 26 states. [2019-11-25 08:46:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:16,238 INFO L93 Difference]: Finished difference Result 1137 states and 3340 transitions. [2019-11-25 08:46:16,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:46:16,238 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2019-11-25 08:46:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:16,239 INFO L225 Difference]: With dead ends: 1137 [2019-11-25 08:46:16,239 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:46:16,240 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-11-25 08:46:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:46:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:46:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:46:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:46:16,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2019-11-25 08:46:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:16,241 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:16,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-25 08:46:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:16,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:46:16,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:16,451 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:46:16,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:16 BasicIcfg [2019-11-25 08:46:16,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:16,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:16,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:16,456 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:16,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:10" (3/4) ... [2019-11-25 08:46:16,463 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:46:16,476 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2019-11-25 08:46:16,483 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-25 08:46:16,484 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:46:16,484 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:46:16,530 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_205476e2-d9b1-42ba-8895-f2e78da7ff1c/bin/uautomizer/witness.graphml [2019-11-25 08:46:16,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:16,532 INFO L168 Benchmark]: Toolchain (without parser) took 7029.43 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 250.1 MB). Free memory was 939.3 MB in the beginning and 860.2 MB in the end (delta: 79.1 MB). Peak memory consumption was 329.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:16,532 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:16,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:16,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:16,534 INFO L168 Benchmark]: Boogie Preprocessor took 26.05 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:16,534 INFO L168 Benchmark]: RCFGBuilder took 413.95 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:16,535 INFO L168 Benchmark]: TraceAbstraction took 5619.00 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 108.0 MB). Free memory was 1.0 GB in the beginning and 862.7 MB in the end (delta: 174.7 MB). Peak memory consumption was 282.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:16,535 INFO L168 Benchmark]: Witness Printer took 74.63 ms. Allocated memory is still 1.3 GB. Free memory was 862.7 MB in the beginning and 860.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:16,537 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 833.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.05 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 413.95 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5619.00 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 108.0 MB). Free memory was 1.0 GB in the beginning and 862.7 MB in the end (delta: 174.7 MB). Peak memory consumption was 282.7 MB. Max. memory is 11.5 GB. * Witness Printer took 74.63 ms. Allocated memory is still 1.3 GB. Free memory was 862.7 MB in the beginning and 860.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1089]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 83 locations, 1 error locations. Result: SAFE, OverallTime: 5.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 728 SDslu, 1636 SDs, 0 SdLazy, 517 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7898occurred 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: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 704 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 512 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 154356 SizeOfPredicates, 18 NumberOfNonLiveVariables, 504 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/120 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...