./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 f6fb2bb1 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-f6fb2bb [2019-11-19 19:06:37,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:06:37,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:06:37,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:06:37,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:06:37,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:06:37,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:06:37,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:06:37,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:06:37,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:06:37,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:06:37,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:06:37,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:06:37,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:06:37,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:06:37,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:06:37,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:06:37,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:06:37,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:06:37,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:06:37,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:06:37,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:06:37,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:06:37,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:06:37,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:06:37,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:06:37,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:06:37,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:06:37,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:06:37,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:06:37,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:06:37,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:06:37,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:06:37,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:06:37,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:06:37,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:06:37,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:06:37,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:06:37,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:06:37,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:06:37,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:06:37,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 19:06:37,313 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:06:37,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:06:37,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:06:37,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:06:37,316 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:06:37,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:06:37,317 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 19:06:37,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:06:37,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 19:06:37,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:06:37,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 19:06:37,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 19:06:37,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 19:06:37,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 19:06:37,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 19:06:37,321 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:06:37,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 19:06:37,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:06:37,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:06:37,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 19:06:37,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 19:06:37,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:06:37,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:06:37,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 19:06:37,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 19:06:37,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 19:06:37,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 19:06:37,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 19:06:37,325 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 19:06:37,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:06:37,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:06:37,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:06:37,696 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:06:37,696 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:06:37,697 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sigma.i [2019-11-19 19:06:37,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9646c2018/c5675806b7c14ecc99cc49f8c60f6e5d/FLAGdc4019faf [2019-11-19 19:06:38,392 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:06:38,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sigma.i [2019-11-19 19:06:38,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9646c2018/c5675806b7c14ecc99cc49f8c60f6e5d/FLAGdc4019faf [2019-11-19 19:06:38,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9646c2018/c5675806b7c14ecc99cc49f8c60f6e5d [2019-11-19 19:06:38,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:06:38,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 19:06:38,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:06:38,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:06:38,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:06:38,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:38" (1/1) ... [2019-11-19 19:06:38,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0aecdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:38, skipping insertion in model container [2019-11-19 19:06:38,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:38" (1/1) ... [2019-11-19 19:06:38,677 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:06:38,735 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:06:39,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:06:39,363 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:06:39,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:06:39,617 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:06:39,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39 WrapperNode [2019-11-19 19:06:39,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:06:39,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 19:06:39,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 19:06:39,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 19:06:39,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 19:06:39,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:06:39,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:06:39,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:06:39,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (1/1) ... [2019-11-19 19:06:39,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:06:39,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:06:39,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:06:39,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:06:39,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (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 19:06:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 19:06:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 19:06:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 19:06:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 19:06:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 19:06:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 19:06:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 19:06:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-19 19:06:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-19 19:06:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:06:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:06:39,791 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 19:06:40,196 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:06:40,197 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-19 19:06:40,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:40 BoogieIcfgContainer [2019-11-19 19:06:40,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:06:40,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 19:06:40,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 19:06:40,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 19:06:40,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:06:38" (1/3) ... [2019-11-19 19:06:40,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be6da61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:40, skipping insertion in model container [2019-11-19 19:06:40,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:39" (2/3) ... [2019-11-19 19:06:40,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be6da61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:40, skipping insertion in model container [2019-11-19 19:06:40,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:40" (3/3) ... [2019-11-19 19:06:40,207 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-11-19 19:06:40,244 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,245 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,245 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,245 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,246 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,246 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,246 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,246 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,247 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,247 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,247 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,247 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,248 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,248 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,248 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,248 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,249 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,249 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 19:06:40,290 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-19 19:06:40,290 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 19:06:40,298 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 19:06:40,307 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 19:06:40,325 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 19:06:40,325 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 19:06:40,325 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 19:06:40,325 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:06:40,325 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:06:40,325 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 19:06:40,326 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:06:40,326 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 19:06:40,338 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 84 transitions [2019-11-19 19:06:41,098 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8677 states. [2019-11-19 19:06:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8677 states. [2019-11-19 19:06:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-19 19:06:41,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:41,119 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] [2019-11-19 19:06:41,121 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash 435246548, now seen corresponding path program 1 times [2019-11-19 19:06:41,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:41,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967750889] [2019-11-19 19:06:41,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:41,493 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 19:06:41,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967750889] [2019-11-19 19:06:41,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:06:41,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 19:06:41,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391717592] [2019-11-19 19:06:41,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 19:06:41,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:41,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 19:06:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 19:06:41,526 INFO L87 Difference]: Start difference. First operand 8677 states. Second operand 2 states. [2019-11-19 19:06:41,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:41,682 INFO L93 Difference]: Finished difference Result 8677 states and 25969 transitions. [2019-11-19 19:06:41,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 19:06:41,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-11-19 19:06:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:41,775 INFO L225 Difference]: With dead ends: 8677 [2019-11-19 19:06:41,775 INFO L226 Difference]: Without dead ends: 6628 [2019-11-19 19:06:41,780 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 19:06:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2019-11-19 19:06:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 6628. [2019-11-19 19:06:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6628 states. [2019-11-19 19:06:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6628 states to 6628 states and 19528 transitions. [2019-11-19 19:06:42,192 INFO L78 Accepts]: Start accepts. Automaton has 6628 states and 19528 transitions. Word has length 30 [2019-11-19 19:06:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:42,193 INFO L462 AbstractCegarLoop]: Abstraction has 6628 states and 19528 transitions. [2019-11-19 19:06:42,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 19:06:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 6628 states and 19528 transitions. [2019-11-19 19:06:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-19 19:06:42,196 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:42,196 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] [2019-11-19 19:06:42,197 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:42,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1154437173, now seen corresponding path program 1 times [2019-11-19 19:06:42,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:42,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699584295] [2019-11-19 19:06:42,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:42,497 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 19:06:42,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699584295] [2019-11-19 19:06:42,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:06:42,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 19:06:42,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294599634] [2019-11-19 19:06:42,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 19:06:42,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:42,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 19:06:42,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:06:42,504 INFO L87 Difference]: Start difference. First operand 6628 states and 19528 transitions. Second operand 5 states. [2019-11-19 19:06:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:42,708 INFO L93 Difference]: Finished difference Result 5722 states and 15307 transitions. [2019-11-19 19:06:42,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 19:06:42,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-19 19:06:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:42,746 INFO L225 Difference]: With dead ends: 5722 [2019-11-19 19:06:42,747 INFO L226 Difference]: Without dead ends: 5722 [2019-11-19 19:06:42,748 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 19:06:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2019-11-19 19:06:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 4933. [2019-11-19 19:06:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4933 states. [2019-11-19 19:06:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 13471 transitions. [2019-11-19 19:06:42,930 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 13471 transitions. Word has length 30 [2019-11-19 19:06:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:42,931 INFO L462 AbstractCegarLoop]: Abstraction has 4933 states and 13471 transitions. [2019-11-19 19:06:42,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 19:06:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 13471 transitions. [2019-11-19 19:06:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-19 19:06:42,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:42,948 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] [2019-11-19 19:06:42,948 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:42,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1828071263, now seen corresponding path program 1 times [2019-11-19 19:06:42,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:42,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020226393] [2019-11-19 19:06:42,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:43,305 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 19:06:43,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020226393] [2019-11-19 19:06:43,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315034999] [2019-11-19 19:06:43,307 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 19:06:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:43,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 19:06:43,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:06:43,539 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 19:06:43,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:06:43,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-11-19 19:06:43,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116943969] [2019-11-19 19:06:43,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-19 19:06:43,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:43,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-19 19:06:43,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-19 19:06:43,542 INFO L87 Difference]: Start difference. First operand 4933 states and 13471 transitions. Second operand 18 states. [2019-11-19 19:06:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:43,800 INFO L93 Difference]: Finished difference Result 5188 states and 14050 transitions. [2019-11-19 19:06:43,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 19:06:43,801 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2019-11-19 19:06:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:43,834 INFO L225 Difference]: With dead ends: 5188 [2019-11-19 19:06:43,834 INFO L226 Difference]: Without dead ends: 5188 [2019-11-19 19:06:43,835 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 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 19:06:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2019-11-19 19:06:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 4903. [2019-11-19 19:06:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4903 states. [2019-11-19 19:06:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 13402 transitions. [2019-11-19 19:06:44,002 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 13402 transitions. Word has length 62 [2019-11-19 19:06:44,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:44,003 INFO L462 AbstractCegarLoop]: Abstraction has 4903 states and 13402 transitions. [2019-11-19 19:06:44,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-19 19:06:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 13402 transitions. [2019-11-19 19:06:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-19 19:06:44,014 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:44,015 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] [2019-11-19 19:06:44,221 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:44,221 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:44,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1944582457, now seen corresponding path program 1 times [2019-11-19 19:06:44,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:44,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651890780] [2019-11-19 19:06:44,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:44,575 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 19:06:44,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651890780] [2019-11-19 19:06:44,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383965376] [2019-11-19 19:06:44,577 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 19:06:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:44,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 19:06:44,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:06:44,869 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 19:06:44,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:06:44,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2019-11-19 19:06:44,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541926467] [2019-11-19 19:06:44,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-19 19:06:44,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:44,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-19 19:06:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-11-19 19:06:44,875 INFO L87 Difference]: Start difference. First operand 4903 states and 13402 transitions. Second operand 22 states. [2019-11-19 19:06:45,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:45,170 INFO L93 Difference]: Finished difference Result 4753 states and 12937 transitions. [2019-11-19 19:06:45,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 19:06:45,170 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 74 [2019-11-19 19:06:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:45,201 INFO L225 Difference]: With dead ends: 4753 [2019-11-19 19:06:45,201 INFO L226 Difference]: Without dead ends: 4753 [2019-11-19 19:06:45,202 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-11-19 19:06:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4753 states. [2019-11-19 19:06:45,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4753 to 4753. [2019-11-19 19:06:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4753 states. [2019-11-19 19:06:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 12937 transitions. [2019-11-19 19:06:45,375 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 12937 transitions. Word has length 74 [2019-11-19 19:06:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:45,378 INFO L462 AbstractCegarLoop]: Abstraction has 4753 states and 12937 transitions. [2019-11-19 19:06:45,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-19 19:06:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 12937 transitions. [2019-11-19 19:06:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-19 19:06:45,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:06:45,395 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] [2019-11-19 19:06:45,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:45,600 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 19:06:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:06:45,600 INFO L82 PathProgramCache]: Analyzing trace with hash 233738797, now seen corresponding path program 1 times [2019-11-19 19:06:45,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:06:45,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066251463] [2019-11-19 19:06:45,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:06:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:46,068 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 19:06:46,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066251463] [2019-11-19 19:06:46,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111069824] [2019-11-19 19:06:46,070 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 19:06:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:06:46,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 19:06:46,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:06:46,371 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 19:06:46,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:06:46,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 26 [2019-11-19 19:06:46,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144811672] [2019-11-19 19:06:46,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-19 19:06:46,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:06:46,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-19 19:06:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2019-11-19 19:06:46,381 INFO L87 Difference]: Start difference. First operand 4753 states and 12937 transitions. Second operand 26 states. [2019-11-19 19:06:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:06:46,593 INFO L93 Difference]: Finished difference Result 1856 states and 5132 transitions. [2019-11-19 19:06:46,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 19:06:46,594 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 86 [2019-11-19 19:06:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:06:46,595 INFO L225 Difference]: With dead ends: 1856 [2019-11-19 19:06:46,595 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 19:06:46,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-11-19 19:06:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 19:06:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 19:06:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 19:06:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 19:06:46,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2019-11-19 19:06:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:06:46,598 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:06:46,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-19 19:06:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 19:06:46,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 19:06:46,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:06:46,806 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-19 19:06:46,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:06:46 BasicIcfg [2019-11-19 19:06:46,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 19:06:46,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:06:46,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:06:46,809 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:06:46,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:40" (3/4) ... [2019-11-19 19:06:46,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 19:06:46,835 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2019-11-19 19:06:46,844 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-19 19:06:46,844 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 19:06:46,903 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 19:06:46,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:06:46,909 INFO L168 Benchmark]: Toolchain (without parser) took 8246.03 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 248.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -122.7 MB). Peak memory consumption was 125.3 MB. Max. memory is 11.5 GB. [2019-11-19 19:06:46,910 INFO L168 Benchmark]: CDTParser took 0.33 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 19:06:46,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 957.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.5 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -49.8 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:06:46,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:06:46,912 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:06:46,914 INFO L168 Benchmark]: RCFGBuilder took 490.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 971.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-11-19 19:06:46,915 INFO L168 Benchmark]: TraceAbstraction took 6608.64 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 172.5 MB). Free memory was 971.7 MB in the beginning and 1.1 GB in the end (delta: -106.0 MB). Peak memory consumption was 66.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:06:46,916 INFO L168 Benchmark]: Witness Printer took 94.70 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:06:46,923 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 957.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.5 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -49.8 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 490.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 971.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6608.64 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 172.5 MB). Free memory was 971.7 MB in the beginning and 1.1 GB in the end (delta: -106.0 MB). Peak memory consumption was 66.5 MB. Max. memory is 11.5 GB. * Witness Printer took 94.70 ms. Allocated memory is still 1.3 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, 82 locations, 1 error locations. Result: SAFE, OverallTime: 6.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 356 SDtfs, 981 SDslu, 1527 SDs, 0 SdLazy, 492 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8677occurred 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: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 1074 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 504 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 496 ConstructedInterpolants, 0 QuantifiedInterpolants, 154390 SizeOfPredicates, 18 NumberOfNonLiveVariables, 501 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...