./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/sigma.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/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 0.1.24-678e011 [2019-11-20 06:02:32,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:02:32,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:02:32,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:02:32,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:02:32,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:02:32,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:02:32,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:02:32,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:02:32,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:02:32,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:02:32,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:02:32,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:02:32,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:02:32,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:02:32,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:02:32,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:02:32,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:02:32,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:02:32,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:02:32,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:02:32,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:02:32,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:02:32,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:02:32,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:02:32,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:02:32,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:02:32,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:02:32,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:02:32,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:02:32,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:02:32,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:02:32,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:02:32,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:02:32,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:02:32,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:02:32,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:02:32,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:02:32,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:02:32,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:02:32,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:02:32,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 06:02:32,934 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:02:32,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:02:32,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:02:32,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:02:32,936 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:02:32,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:02:32,937 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:02:32,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:02:32,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:02:32,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:02:32,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:02:32,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:02:32,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:02:32,938 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:02:32,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:02:32,938 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:02:32,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:02:32,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:02:32,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:02:32,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:02:32,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:02:32,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:02:32,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:02:32,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:02:32,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:02:32,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:02:32,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:02:32,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:02:32,941 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_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/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 [2019-11-20 06:02:33,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:02:33,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:02:33,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:02:33,106 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:02:33,112 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:02:33,113 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/../../sv-benchmarks/c/pthread/sigma.i [2019-11-20 06:02:33,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/data/4df03ae86/1c2e0c0aaede4c4fb36f4f8fc629bc90/FLAG88c057b51 [2019-11-20 06:02:33,670 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:02:33,670 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/sv-benchmarks/c/pthread/sigma.i [2019-11-20 06:02:33,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/data/4df03ae86/1c2e0c0aaede4c4fb36f4f8fc629bc90/FLAG88c057b51 [2019-11-20 06:02:33,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/data/4df03ae86/1c2e0c0aaede4c4fb36f4f8fc629bc90 [2019-11-20 06:02:33,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:02:33,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:02:33,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:02:33,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:02:33,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:02:33,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:33" (1/1) ... [2019-11-20 06:02:33,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6851d26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:33, skipping insertion in model container [2019-11-20 06:02:33,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:33" (1/1) ... [2019-11-20 06:02:33,905 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:02:33,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:02:34,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:02:34,468 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:02:34,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:02:34,661 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:02:34,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34 WrapperNode [2019-11-20 06:02:34,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:02:34,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:02:34,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:02:34,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:02:34,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:02:34,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:02:34,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:02:34,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:02:34,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... [2019-11-20 06:02:34,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:02:34,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:02:34,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:02:34,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:02:34,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/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 [2019-11-20 06:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 06:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 06:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 06:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 06:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 06:02:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 06:02:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 06:02:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-20 06:02:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-20 06:02:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:02:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:02:34,804 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 06:02:35,182 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:02:35,183 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 06:02:35,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:35 BoogieIcfgContainer [2019-11-20 06:02:35,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:02:35,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:02:35,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:02:35,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:02:35,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:02:33" (1/3) ... [2019-11-20 06:02:35,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4b3ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:02:35, skipping insertion in model container [2019-11-20 06:02:35,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:34" (2/3) ... [2019-11-20 06:02:35,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4b3ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:02:35, skipping insertion in model container [2019-11-20 06:02:35,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:35" (3/3) ... [2019-11-20 06:02:35,191 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-11-20 06:02:35,224 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,224 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,224 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,224 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,225 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,225 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,225 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,225 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,226 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,226 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,226 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,226 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,226 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,227 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,227 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,227 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,227 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,227 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:02:35,245 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 06:02:35,246 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:02:35,252 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 06:02:35,262 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 06:02:35,280 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:02:35,280 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:02:35,280 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:02:35,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:02:35,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:02:35,280 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:02:35,281 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:02:35,281 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:02:35,291 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 85 transitions [2019-11-20 06:02:35,826 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8678 states. [2019-11-20 06:02:35,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8678 states. [2019-11-20 06:02:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 06:02:35,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:02:35,840 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:02:35,841 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:02:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:02:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash -937654746, now seen corresponding path program 1 times [2019-11-20 06:02:35,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:02:35,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031711647] [2019-11-20 06:02:35,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:02:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:02:36,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031711647] [2019-11-20 06:02:36,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:02:36,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 06:02:36,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144311666] [2019-11-20 06:02:36,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 06:02:36,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:02:36,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 06:02:36,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 06:02:36,103 INFO L87 Difference]: Start difference. First operand 8678 states. Second operand 2 states. [2019-11-20 06:02:36,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:02:36,293 INFO L93 Difference]: Finished difference Result 8678 states and 25970 transitions. [2019-11-20 06:02:36,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 06:02:36,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-11-20 06:02:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:02:36,373 INFO L225 Difference]: With dead ends: 8678 [2019-11-20 06:02:36,373 INFO L226 Difference]: Without dead ends: 6629 [2019-11-20 06:02:36,376 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 [2019-11-20 06:02:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2019-11-20 06:02:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6629. [2019-11-20 06:02:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6629 states. [2019-11-20 06:02:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 19529 transitions. [2019-11-20 06:02:36,701 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 19529 transitions. Word has length 31 [2019-11-20 06:02:36,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:02:36,701 INFO L462 AbstractCegarLoop]: Abstraction has 6629 states and 19529 transitions. [2019-11-20 06:02:36,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 06:02:36,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 19529 transitions. [2019-11-20 06:02:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 06:02:36,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:02:36,704 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] [2019-11-20 06:02:36,704 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:02:36,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:02:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash -218464121, now seen corresponding path program 1 times [2019-11-20 06:02:36,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:02:36,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833185383] [2019-11-20 06:02:36,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:02:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:02:36,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833185383] [2019-11-20 06:02:36,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:02:36,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 06:02:36,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071628275] [2019-11-20 06:02:36,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:02:36,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:02:36,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:02:36,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:02:36,900 INFO L87 Difference]: Start difference. First operand 6629 states and 19529 transitions. Second operand 5 states. [2019-11-20 06:02:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:02:37,073 INFO L93 Difference]: Finished difference Result 5723 states and 15308 transitions. [2019-11-20 06:02:37,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:02:37,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 06:02:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:02:37,113 INFO L225 Difference]: With dead ends: 5723 [2019-11-20 06:02:37,114 INFO L226 Difference]: Without dead ends: 5723 [2019-11-20 06:02:37,114 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 [2019-11-20 06:02:37,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2019-11-20 06:02:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 4934. [2019-11-20 06:02:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4934 states. [2019-11-20 06:02:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 13472 transitions. [2019-11-20 06:02:37,291 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 13472 transitions. Word has length 31 [2019-11-20 06:02:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:02:37,292 INFO L462 AbstractCegarLoop]: Abstraction has 4934 states and 13472 transitions. [2019-11-20 06:02:37,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:02:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 13472 transitions. [2019-11-20 06:02:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-20 06:02:37,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:02:37,312 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] [2019-11-20 06:02:37,312 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:02:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:02:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash -650965969, now seen corresponding path program 1 times [2019-11-20 06:02:37,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:02:37,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637885080] [2019-11-20 06:02:37,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:02:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:02:37,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637885080] [2019-11-20 06:02:37,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885904194] [2019-11-20 06:02:37,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/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 [2019-11-20 06:02:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:37,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 06:02:37,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:02:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 06:02:37,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:02:37,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-11-20 06:02:37,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050312384] [2019-11-20 06:02:37,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 06:02:37,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:02:37,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 06:02:37,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-20 06:02:37,982 INFO L87 Difference]: Start difference. First operand 4934 states and 13472 transitions. Second operand 18 states. [2019-11-20 06:02:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:02:38,278 INFO L93 Difference]: Finished difference Result 5189 states and 14051 transitions. [2019-11-20 06:02:38,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:02:38,279 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2019-11-20 06:02:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:02:38,327 INFO L225 Difference]: With dead ends: 5189 [2019-11-20 06:02:38,327 INFO L226 Difference]: Without dead ends: 5189 [2019-11-20 06:02:38,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2019-11-20 06:02:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2019-11-20 06:02:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 4904. [2019-11-20 06:02:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4904 states. [2019-11-20 06:02:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 13403 transitions. [2019-11-20 06:02:38,488 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 13403 transitions. Word has length 63 [2019-11-20 06:02:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:02:38,489 INFO L462 AbstractCegarLoop]: Abstraction has 4904 states and 13403 transitions. [2019-11-20 06:02:38,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 06:02:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 13403 transitions. [2019-11-20 06:02:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-20 06:02:38,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:02:38,501 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] [2019-11-20 06:02:38,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:02:38,717 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:02:38,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:02:38,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1587557546, now seen corresponding path program 1 times [2019-11-20 06:02:38,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:02:38,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258781431] [2019-11-20 06:02:38,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:02:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:02:39,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258781431] [2019-11-20 06:02:39,165 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45254289] [2019-11-20 06:02:39,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/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 [2019-11-20 06:02:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:39,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 06:02:39,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:02:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 06:02:39,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:02:39,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2019-11-20 06:02:39,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88166899] [2019-11-20 06:02:39,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 06:02:39,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:02:39,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 06:02:39,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-11-20 06:02:39,499 INFO L87 Difference]: Start difference. First operand 4904 states and 13403 transitions. Second operand 22 states. [2019-11-20 06:02:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:02:39,924 INFO L93 Difference]: Finished difference Result 4754 states and 12938 transitions. [2019-11-20 06:02:39,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 06:02:39,925 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2019-11-20 06:02:39,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:02:39,939 INFO L225 Difference]: With dead ends: 4754 [2019-11-20 06:02:39,939 INFO L226 Difference]: Without dead ends: 4754 [2019-11-20 06:02:39,940 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-11-20 06:02:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2019-11-20 06:02:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4754. [2019-11-20 06:02:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4754 states. [2019-11-20 06:02:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4754 states to 4754 states and 12938 transitions. [2019-11-20 06:02:40,108 INFO L78 Accepts]: Start accepts. Automaton has 4754 states and 12938 transitions. Word has length 75 [2019-11-20 06:02:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:02:40,110 INFO L462 AbstractCegarLoop]: Abstraction has 4754 states and 12938 transitions. [2019-11-20 06:02:40,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 06:02:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4754 states and 12938 transitions. [2019-11-20 06:02:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-20 06:02:40,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:02:40,124 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] [2019-11-20 06:02:40,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:02:40,336 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:02:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:02:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash 489931774, now seen corresponding path program 1 times [2019-11-20 06:02:40,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:02:40,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733627902] [2019-11-20 06:02:40,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:02:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:02:40,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733627902] [2019-11-20 06:02:40,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010454681] [2019-11-20 06:02:40,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/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 [2019-11-20 06:02:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:02:40,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 06:02:40,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:02:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 06:02:41,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:02:41,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 26 [2019-11-20 06:02:41,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824845686] [2019-11-20 06:02:41,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 06:02:41,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:02:41,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 06:02:41,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2019-11-20 06:02:41,081 INFO L87 Difference]: Start difference. First operand 4754 states and 12938 transitions. Second operand 26 states. [2019-11-20 06:02:41,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:02:41,267 INFO L93 Difference]: Finished difference Result 1857 states and 5133 transitions. [2019-11-20 06:02:41,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 06:02:41,267 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2019-11-20 06:02:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:02:41,268 INFO L225 Difference]: With dead ends: 1857 [2019-11-20 06:02:41,268 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 06:02:41,269 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-11-20 06:02:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 06:02:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 06:02:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 06:02:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 06:02:41,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2019-11-20 06:02:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:02:41,270 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 06:02:41,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 06:02:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 06:02:41,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 06:02:41,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:02:41,477 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 06:02:41,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:02:41 BasicIcfg [2019-11-20 06:02:41,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:02:41,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:02:41,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:02:41,480 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:02:41,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:35" (3/4) ... [2019-11-20 06:02:41,485 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 06:02:41,500 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2019-11-20 06:02:41,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-20 06:02:41,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 06:02:41,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 06:02:41,560 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d7e3dea4-3f92-42e3-8162-9790e1e8e9f6/bin/uautomizer/witness.graphml [2019-11-20 06:02:41,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:02:41,562 INFO L168 Benchmark]: Toolchain (without parser) took 7669.10 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. [2019-11-20 06:02:41,563 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-11-20 06:02:41,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.56 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: -131.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-11-20 06:02:41,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.37 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. [2019-11-20 06:02:41,564 INFO L168 Benchmark]: Boogie Preprocessor took 29.89 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. [2019-11-20 06:02:41,564 INFO L168 Benchmark]: RCFGBuilder took 442.75 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. [2019-11-20 06:02:41,565 INFO L168 Benchmark]: TraceAbstraction took 6293.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.7 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -80.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:02:41,565 INFO L168 Benchmark]: Witness Printer took 80.91 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-11-20 06:02:41,568 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 768.56 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: -131.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 442.75 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 6293.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.7 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -80.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 80.91 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 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: 6.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 361 SDtfs, 1213 SDslu, 1620 SDs, 0 SdLazy, 527 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8678occurred 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, 1074 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 512 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 157020 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...