./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/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/sigma.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 [2019-11-19 21:31:37,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:31:37,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:31:37,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:31:37,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:31:37,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:31:37,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:31:37,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:31:37,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:31:37,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:31:37,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:31:37,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:31:37,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:31:37,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:31:37,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:31:37,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:31:37,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:31:37,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:31:37,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:31:37,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:31:37,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:31:37,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:31:37,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:31:37,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:31:37,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:31:37,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:31:37,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:31:37,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:31:37,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:31:37,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:31:37,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:31:37,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:31:37,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:31:37,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:31:37,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:31:37,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:31:37,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:31:37,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:31:37,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:31:37,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:31:37,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:31:37,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:31:37,969 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:31:37,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:31:37,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:31:37,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:31:37,972 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:31:37,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:31:37,972 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:31:37,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:31:37,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:31:37,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:31:37,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:31:37,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:31:37,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:31:37,974 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:31:37,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:31:37,975 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:31:37,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:31:37,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:31:37,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:31:37,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:31:37,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:31:37,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:31:37,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:31:37,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:31:37,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:31:37,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:31:37,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:31:37,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:31:37,979 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2019-11-19 21:31:38,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:31:38,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:31:38,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:31:38,318 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:31:38,318 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:31:38,320 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sigma.i [2019-11-19 21:31:38,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde7770e7/62bdcfa65145475db0b55af911276770/FLAG00ec49e1c [2019-11-19 21:31:39,007 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:31:39,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sigma.i [2019-11-19 21:31:39,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde7770e7/62bdcfa65145475db0b55af911276770/FLAG00ec49e1c [2019-11-19 21:31:39,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde7770e7/62bdcfa65145475db0b55af911276770 [2019-11-19 21:31:39,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:31:39,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:31:39,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:31:39,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:31:39,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:31:39,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:31:39" (1/1) ... [2019-11-19 21:31:39,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b882689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:39, skipping insertion in model container [2019-11-19 21:31:39,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:31:39" (1/1) ... [2019-11-19 21:31:39,283 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:31:39,337 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:31:39,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:31:39,953 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:31:40,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:31:40,187 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:31:40,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40 WrapperNode [2019-11-19 21:31:40,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:31:40,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:31:40,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:31:40,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:31:40,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:31:40,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:31:40,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:31:40,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:31:40,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... [2019-11-19 21:31:40,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:31:40,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:31:40,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:31:40,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:31:40,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 21:31:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 21:31:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 21:31:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 21:31:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 21:31:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 21:31:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 21:31:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 21:31:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-19 21:31:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-19 21:31:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:31:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:31:40,361 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-19 21:31:40,795 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:31:40,796 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-19 21:31:40,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:31:40 BoogieIcfgContainer [2019-11-19 21:31:40,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:31:40,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:31:40,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:31:40,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:31:40,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:31:39" (1/3) ... [2019-11-19 21:31:40,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398c9dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:31:40, skipping insertion in model container [2019-11-19 21:31:40,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:31:40" (2/3) ... [2019-11-19 21:31:40,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398c9dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:31:40, skipping insertion in model container [2019-11-19 21:31:40,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:31:40" (3/3) ... [2019-11-19 21:31:40,807 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-11-19 21:31:40,849 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,849 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,849 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,849 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,850 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,850 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,850 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,850 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,850 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,851 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,853 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,854 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,854 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,854 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,855 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,855 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,855 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,856 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 21:31:40,874 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-19 21:31:40,875 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:31:40,885 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:31:40,894 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:31:40,912 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:31:40,912 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:31:40,912 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:31:40,912 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:31:40,913 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:31:40,913 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:31:40,913 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:31:40,913 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:31:40,929 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 85 transitions [2019-11-19 21:31:41,592 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8678 states. [2019-11-19 21:31:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8678 states. [2019-11-19 21:31:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 21:31:41,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:31:41,611 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] [2019-11-19 21:31:41,612 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:31:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:31:41,621 INFO L82 PathProgramCache]: Analyzing trace with hash -937654746, now seen corresponding path program 1 times [2019-11-19 21:31:41,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:31:41,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137186886] [2019-11-19 21:31:41,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:31:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:31:41,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137186886] [2019-11-19 21:31:41,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:31:41,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:31:41,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353763562] [2019-11-19 21:31:41,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:31:41,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:31:41,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:31:41,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:31:41,930 INFO L87 Difference]: Start difference. First operand 8678 states. Second operand 2 states. [2019-11-19 21:31:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:31:42,100 INFO L93 Difference]: Finished difference Result 8678 states and 25970 transitions. [2019-11-19 21:31:42,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:31:42,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-11-19 21:31:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:31:42,198 INFO L225 Difference]: With dead ends: 8678 [2019-11-19 21:31:42,198 INFO L226 Difference]: Without dead ends: 6629 [2019-11-19 21:31:42,205 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 [2019-11-19 21:31:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2019-11-19 21:31:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6629. [2019-11-19 21:31:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6629 states. [2019-11-19 21:31:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 19529 transitions. [2019-11-19 21:31:42,719 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 19529 transitions. Word has length 31 [2019-11-19 21:31:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:31:42,719 INFO L462 AbstractCegarLoop]: Abstraction has 6629 states and 19529 transitions. [2019-11-19 21:31:42,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:31:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 19529 transitions. [2019-11-19 21:31:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 21:31:42,721 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:31:42,722 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] [2019-11-19 21:31:42,722 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:31:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:31:42,723 INFO L82 PathProgramCache]: Analyzing trace with hash -218464121, now seen corresponding path program 1 times [2019-11-19 21:31:42,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:31:42,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284753602] [2019-11-19 21:31:42,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:31:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:31:42,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284753602] [2019-11-19 21:31:42,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:31:42,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 21:31:42,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096453792] [2019-11-19 21:31:42,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 21:31:42,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:31:42,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 21:31:42,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 21:31:42,899 INFO L87 Difference]: Start difference. First operand 6629 states and 19529 transitions. Second operand 5 states. [2019-11-19 21:31:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:31:43,099 INFO L93 Difference]: Finished difference Result 5723 states and 15308 transitions. [2019-11-19 21:31:43,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 21:31:43,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-19 21:31:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:31:43,144 INFO L225 Difference]: With dead ends: 5723 [2019-11-19 21:31:43,145 INFO L226 Difference]: Without dead ends: 5723 [2019-11-19 21:31:43,146 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 [2019-11-19 21:31:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2019-11-19 21:31:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 4934. [2019-11-19 21:31:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4934 states. [2019-11-19 21:31:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 13472 transitions. [2019-11-19 21:31:43,331 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 13472 transitions. Word has length 31 [2019-11-19 21:31:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:31:43,332 INFO L462 AbstractCegarLoop]: Abstraction has 4934 states and 13472 transitions. [2019-11-19 21:31:43,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 21:31:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 13472 transitions. [2019-11-19 21:31:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-19 21:31:43,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:31:43,344 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] [2019-11-19 21:31:43,344 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:31:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:31:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash -946740049, now seen corresponding path program 1 times [2019-11-19 21:31:43,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:31:43,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550542127] [2019-11-19 21:31:43,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:31:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:31:43,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550542127] [2019-11-19 21:31:43,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392211029] [2019-11-19 21:31:43,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 21:31:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:43,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 21:31:43,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:31:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 21:31:43,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 21:31:43,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-11-19 21:31:43,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229902955] [2019-11-19 21:31:43,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-19 21:31:43,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:31:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-19 21:31:43,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-19 21:31:43,932 INFO L87 Difference]: Start difference. First operand 4934 states and 13472 transitions. Second operand 18 states. [2019-11-19 21:31:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:31:44,181 INFO L93 Difference]: Finished difference Result 5189 states and 14051 transitions. [2019-11-19 21:31:44,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 21:31:44,181 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2019-11-19 21:31:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:31:44,228 INFO L225 Difference]: With dead ends: 5189 [2019-11-19 21:31:44,228 INFO L226 Difference]: Without dead ends: 5189 [2019-11-19 21:31:44,229 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 [2019-11-19 21:31:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2019-11-19 21:31:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 4904. [2019-11-19 21:31:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4904 states. [2019-11-19 21:31:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 13403 transitions. [2019-11-19 21:31:44,391 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 13403 transitions. Word has length 63 [2019-11-19 21:31:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:31:44,392 INFO L462 AbstractCegarLoop]: Abstraction has 4904 states and 13403 transitions. [2019-11-19 21:31:44,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-19 21:31:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 13403 transitions. [2019-11-19 21:31:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-19 21:31:44,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:31:44,405 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] [2019-11-19 21:31:44,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 21:31:44,611 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:31:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:31:44,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1044519978, now seen corresponding path program 1 times [2019-11-19 21:31:44,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:31:44,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572270075] [2019-11-19 21:31:44,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:31:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:31:44,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572270075] [2019-11-19 21:31:44,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519345499] [2019-11-19 21:31:44,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 21:31:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:45,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 21:31:45,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:31:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 21:31:45,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 21:31:45,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2019-11-19 21:31:45,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545641576] [2019-11-19 21:31:45,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-19 21:31:45,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:31:45,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-19 21:31:45,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-11-19 21:31:45,279 INFO L87 Difference]: Start difference. First operand 4904 states and 13403 transitions. Second operand 22 states. [2019-11-19 21:31:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:31:45,649 INFO L93 Difference]: Finished difference Result 4754 states and 12938 transitions. [2019-11-19 21:31:45,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 21:31:45,650 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2019-11-19 21:31:45,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:31:45,665 INFO L225 Difference]: With dead ends: 4754 [2019-11-19 21:31:45,665 INFO L226 Difference]: Without dead ends: 4754 [2019-11-19 21:31:45,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-11-19 21:31:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2019-11-19 21:31:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4754. [2019-11-19 21:31:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4754 states. [2019-11-19 21:31:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4754 states to 4754 states and 12938 transitions. [2019-11-19 21:31:45,928 INFO L78 Accepts]: Start accepts. Automaton has 4754 states and 12938 transitions. Word has length 75 [2019-11-19 21:31:45,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:31:45,929 INFO L462 AbstractCegarLoop]: Abstraction has 4754 states and 12938 transitions. [2019-11-19 21:31:45,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-19 21:31:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4754 states and 12938 transitions. [2019-11-19 21:31:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-19 21:31:45,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:31:45,941 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] [2019-11-19 21:31:46,145 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 21:31:46,146 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:31:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:31:46,147 INFO L82 PathProgramCache]: Analyzing trace with hash 716250238, now seen corresponding path program 1 times [2019-11-19 21:31:46,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:31:46,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145000193] [2019-11-19 21:31:46,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:31:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:31:46,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145000193] [2019-11-19 21:31:46,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036165516] [2019-11-19 21:31:46,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 21:31:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:31:46,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 21:31:46,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:31:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 21:31:46,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 21:31:46,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 26 [2019-11-19 21:31:46,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194548621] [2019-11-19 21:31:46,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-19 21:31:46,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:31:46,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-19 21:31:46,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2019-11-19 21:31:46,840 INFO L87 Difference]: Start difference. First operand 4754 states and 12938 transitions. Second operand 26 states. [2019-11-19 21:31:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:31:47,031 INFO L93 Difference]: Finished difference Result 1857 states and 5133 transitions. [2019-11-19 21:31:47,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 21:31:47,031 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2019-11-19 21:31:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:31:47,033 INFO L225 Difference]: With dead ends: 1857 [2019-11-19 21:31:47,034 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 21:31:47,034 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 [2019-11-19 21:31:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 21:31:47,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 21:31:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 21:31:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 21:31:47,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2019-11-19 21:31:47,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:31:47,036 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 21:31:47,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-19 21:31:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 21:31:47,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 21:31:47,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 21:31:47,243 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-19 21:31:47,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:31:47 BasicIcfg [2019-11-19 21:31:47,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:31:47,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:31:47,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:31:47,248 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:31:47,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:31:40" (3/4) ... [2019-11-19 21:31:47,253 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 21:31:47,264 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2019-11-19 21:31:47,270 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-19 21:31:47,271 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 21:31:47,271 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-19 21:31:47,330 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:31:47,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:31:47,334 INFO L168 Benchmark]: Toolchain (without parser) took 8073.27 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 321.9 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -145.5 MB). Peak memory consumption was 176.5 MB. Max. memory is 11.5 GB. [2019-11-19 21:31:47,335 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:31:47,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 927.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -111.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:31:47,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:31:47,341 INFO L168 Benchmark]: Boogie Preprocessor took 35.58 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. [2019-11-19 21:31:47,341 INFO L168 Benchmark]: RCFGBuilder took 512.66 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:31:47,343 INFO L168 Benchmark]: TraceAbstraction took 6446.89 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -65.5 MB). Peak memory consumption was 122.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:31:47,345 INFO L168 Benchmark]: Witness Printer took 83.79 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:31:47,349 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 927.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -111.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.58 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 512.66 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6446.89 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -65.5 MB). Peak memory consumption was 122.7 MB. Max. memory is 11.5 GB. * Witness Printer took 83.79 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. 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: 6.3s, 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, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.1s 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: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1074 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, 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...