./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b79dddd7d9e2c4a1dea51534d81c18928c635387 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:39:57,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:39:57,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:39:57,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:39:57,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:39:57,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:39:57,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:39:57,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:39:57,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:39:57,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:39:57,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:39:57,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:39:57,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:39:57,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:39:57,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:39:57,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:39:57,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:39:57,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:39:57,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:39:57,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:39:57,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:39:57,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:39:57,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:39:57,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:39:57,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:39:57,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:39:57,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:39:57,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:39:57,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:39:57,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:39:57,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:39:57,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:39:57,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:39:57,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:39:57,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:39:57,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:39:57,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:39:57,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:39:57,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:39:57,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:39:57,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:39:57,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:39:57,823 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:39:57,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:39:57,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:39:57,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:39:57,824 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:39:57,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:39:57,824 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:39:57,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:39:57,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:39:57,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:39:57,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:39:57,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:39:57,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:39:57,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:39:57,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:39:57,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:39:57,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:39:57,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:39:57,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:39:57,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:39:57,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:39:57,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:39:57,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:39:57,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:39:57,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:39:57,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:39:57,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:39:57,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:39:57,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:39:57,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79dddd7d9e2c4a1dea51534d81c18928c635387 [2019-12-07 13:39:57,929 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:39:57,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:39:57,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:39:57,940 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:39:57,940 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:39:57,941 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i [2019-12-07 13:39:57,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/data/8fe5d7a8a/5bcc84494a5c4ec5996a25a306092035/FLAG5489a4515 [2019-12-07 13:39:58,512 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:39:58,513 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i [2019-12-07 13:39:58,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/data/8fe5d7a8a/5bcc84494a5c4ec5996a25a306092035/FLAG5489a4515 [2019-12-07 13:39:58,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/data/8fe5d7a8a/5bcc84494a5c4ec5996a25a306092035 [2019-12-07 13:39:58,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:39:58,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:39:58,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:39:58,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:39:58,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:39:58,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:39:58" (1/1) ... [2019-12-07 13:39:58,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362cd1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:58, skipping insertion in model container [2019-12-07 13:39:58,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:39:58" (1/1) ... [2019-12-07 13:39:58,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:39:59,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:39:59,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:39:59,264 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:39:59,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:39:59,352 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:39:59,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59 WrapperNode [2019-12-07 13:39:59,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:39:59,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:39:59,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:39:59,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:39:59,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:39:59,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:39:59,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:39:59,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:39:59,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... [2019-12-07 13:39:59,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:39:59,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:39:59,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:39:59,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:39:59,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:39:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:39:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 13:39:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:39:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:39:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 13:39:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 13:39:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 13:39:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 13:39:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 13:39:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 13:39:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 13:39:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:39:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:39:59,446 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 13:39:59,617 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:39:59,617 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:39:59,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:39:59 BoogieIcfgContainer [2019-12-07 13:39:59,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:39:59,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:39:59,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:39:59,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:39:59,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:39:58" (1/3) ... [2019-12-07 13:39:59,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebbfdfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:39:59, skipping insertion in model container [2019-12-07 13:39:59,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:59" (2/3) ... [2019-12-07 13:39:59,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebbfdfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:39:59, skipping insertion in model container [2019-12-07 13:39:59,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:39:59" (3/3) ... [2019-12-07 13:39:59,623 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2019-12-07 13:39:59,629 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 13:39:59,629 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:39:59,633 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:39:59,633 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 13:39:59,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,650 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,650 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,651 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,651 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,651 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,651 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,651 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,651 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,651 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,652 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,652 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,652 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,652 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,652 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,652 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,652 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:39:59,667 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:39:59,679 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:39:59,679 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:39:59,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:39:59,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:39:59,680 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:39:59,680 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:39:59,680 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:39:59,680 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:39:59,688 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 13:39:59,689 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 13:39:59,713 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 13:39:59,714 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:39:59,718 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 13:39:59,719 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 13:39:59,729 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 13:39:59,729 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:39:59,730 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 13:39:59,731 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 13:39:59,732 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 13:40:00,509 INFO L206 etLargeBlockEncoding]: Checked pairs total: 482 [2019-12-07 13:40:00,509 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-07 13:40:00,512 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 13:40:00,519 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 13:40:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 13:40:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 13:40:00,525 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:00,526 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:00,526 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:00,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1824698528, now seen corresponding path program 1 times [2019-12-07 13:40:00,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:00,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356606532] [2019-12-07 13:40:00,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:00,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356606532] [2019-12-07 13:40:00,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:00,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:40:00,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642857728] [2019-12-07 13:40:00,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:40:00,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:00,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:40:00,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:40:00,712 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-07 13:40:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:00,735 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2019-12-07 13:40:00,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:40:00,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 13:40:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:00,747 INFO L225 Difference]: With dead ends: 50 [2019-12-07 13:40:00,747 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:40:00,749 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:40:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:40:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 13:40:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 13:40:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-07 13:40:00,776 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-07 13:40:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:00,777 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-07 13:40:00,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:40:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-07 13:40:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 13:40:00,778 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:00,778 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:00,778 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:00,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1592223242, now seen corresponding path program 1 times [2019-12-07 13:40:00,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:00,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799377071] [2019-12-07 13:40:00,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:00,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799377071] [2019-12-07 13:40:00,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:00,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:40:00,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855653761] [2019-12-07 13:40:00,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:40:00,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:00,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:40:00,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:40:00,852 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 4 states. [2019-12-07 13:40:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:00,861 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2019-12-07 13:40:00,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:40:00,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 13:40:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:00,863 INFO L225 Difference]: With dead ends: 34 [2019-12-07 13:40:00,863 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 13:40:00,863 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:40:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 13:40:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 13:40:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 13:40:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-07 13:40:00,867 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 9 [2019-12-07 13:40:00,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:00,867 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-07 13:40:00,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:40:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-07 13:40:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 13:40:00,868 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:00,868 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:00,868 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:00,869 INFO L82 PathProgramCache]: Analyzing trace with hash -731020953, now seen corresponding path program 1 times [2019-12-07 13:40:00,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:00,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080788070] [2019-12-07 13:40:00,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:00,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080788070] [2019-12-07 13:40:00,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:00,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:40:00,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238685155] [2019-12-07 13:40:00,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:40:00,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:00,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:40:00,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:40:00,924 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 5 states. [2019-12-07 13:40:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:00,958 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2019-12-07 13:40:00,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:40:00,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 13:40:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:00,959 INFO L225 Difference]: With dead ends: 37 [2019-12-07 13:40:00,959 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 13:40:00,959 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:40:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 13:40:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 13:40:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 13:40:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 48 transitions. [2019-12-07 13:40:00,962 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 48 transitions. Word has length 9 [2019-12-07 13:40:00,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:00,963 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 48 transitions. [2019-12-07 13:40:00,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:40:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 48 transitions. [2019-12-07 13:40:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:40:00,963 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:00,963 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:00,963 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:00,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:00,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2114338813, now seen corresponding path program 1 times [2019-12-07 13:40:00,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:00,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881293748] [2019-12-07 13:40:00,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:01,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881293748] [2019-12-07 13:40:01,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:01,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:40:01,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270789388] [2019-12-07 13:40:01,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:40:01,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:40:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:40:01,004 INFO L87 Difference]: Start difference. First operand 29 states and 48 transitions. Second operand 4 states. [2019-12-07 13:40:01,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:01,025 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2019-12-07 13:40:01,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:40:01,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:40:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:01,026 INFO L225 Difference]: With dead ends: 35 [2019-12-07 13:40:01,026 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 13:40:01,027 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:40:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 13:40:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 13:40:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 13:40:01,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 50 transitions. [2019-12-07 13:40:01,031 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 50 transitions. Word has length 10 [2019-12-07 13:40:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:01,031 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 50 transitions. [2019-12-07 13:40:01,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:40:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2019-12-07 13:40:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:40:01,032 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:01,032 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:01,032 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:01,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1301449846, now seen corresponding path program 1 times [2019-12-07 13:40:01,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:01,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548457727] [2019-12-07 13:40:01,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:01,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548457727] [2019-12-07 13:40:01,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:01,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:40:01,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115804166] [2019-12-07 13:40:01,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:40:01,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:01,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:40:01,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:40:01,078 INFO L87 Difference]: Start difference. First operand 31 states and 50 transitions. Second operand 4 states. [2019-12-07 13:40:01,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:01,086 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2019-12-07 13:40:01,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:40:01,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:40:01,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:01,087 INFO L225 Difference]: With dead ends: 30 [2019-12-07 13:40:01,087 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 13:40:01,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:40:01,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 13:40:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-12-07 13:40:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 13:40:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2019-12-07 13:40:01,090 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 10 [2019-12-07 13:40:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:01,090 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2019-12-07 13:40:01,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:40:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2019-12-07 13:40:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:40:01,091 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:01,091 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:01,091 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:01,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1186765067, now seen corresponding path program 2 times [2019-12-07 13:40:01,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:01,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008055815] [2019-12-07 13:40:01,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:01,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008055815] [2019-12-07 13:40:01,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:01,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:40:01,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112128029] [2019-12-07 13:40:01,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:40:01,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:01,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:40:01,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:40:01,130 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand 5 states. [2019-12-07 13:40:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:01,149 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2019-12-07 13:40:01,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:40:01,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 13:40:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:01,150 INFO L225 Difference]: With dead ends: 31 [2019-12-07 13:40:01,150 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 13:40:01,151 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:40:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 13:40:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 13:40:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 13:40:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2019-12-07 13:40:01,153 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 10 [2019-12-07 13:40:01,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:01,154 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2019-12-07 13:40:01,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:40:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2019-12-07 13:40:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:40:01,154 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:01,154 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:01,155 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:01,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1005356980, now seen corresponding path program 1 times [2019-12-07 13:40:01,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:01,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741773382] [2019-12-07 13:40:01,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:01,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741773382] [2019-12-07 13:40:01,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:01,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:40:01,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531058730] [2019-12-07 13:40:01,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:40:01,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:01,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:40:01,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:40:01,200 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 5 states. [2019-12-07 13:40:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:01,216 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2019-12-07 13:40:01,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:40:01,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 13:40:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:01,217 INFO L225 Difference]: With dead ends: 26 [2019-12-07 13:40:01,217 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 13:40:01,217 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:40:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 13:40:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 13:40:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 13:40:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 13:40:01,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-12-07 13:40:01,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:01,219 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 13:40:01,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:40:01,219 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 13:40:01,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:40:01,220 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:40:01,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:40:01,220 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:40:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:40:01,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1690191566, now seen corresponding path program 2 times [2019-12-07 13:40:01,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:40:01,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343845033] [2019-12-07 13:40:01,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:40:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:40:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:40:01,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343845033] [2019-12-07 13:40:01,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:40:01,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:40:01,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361719975] [2019-12-07 13:40:01,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:40:01,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:40:01,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:40:01,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:40:01,261 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-12-07 13:40:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:40:01,273 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-07 13:40:01,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:40:01,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:40:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:40:01,274 INFO L225 Difference]: With dead ends: 14 [2019-12-07 13:40:01,274 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:40:01,274 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:40:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:40:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:40:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:40:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:40:01,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 13:40:01,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:40:01,275 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:40:01,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:40:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:40:01,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:40:01,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:40:01 BasicIcfg [2019-12-07 13:40:01,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:40:01,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:40:01,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:40:01,278 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:40:01,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:39:59" (3/4) ... [2019-12-07 13:40:01,280 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:40:01,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 13:40:01,286 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 13:40:01,286 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 13:40:01,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 13:40:01,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:40:01,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:40:01,328 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cb8632e0-c275-4392-8424-de01ca6cfc00/bin/uautomizer/witness.graphml [2019-12-07 13:40:01,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:40:01,331 INFO L168 Benchmark]: Toolchain (without parser) took 2350.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -64.7 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:40:01,331 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:40:01,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -128.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:40:01,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:40:01,332 INFO L168 Benchmark]: Boogie Preprocessor took 17.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:40:01,332 INFO L168 Benchmark]: RCFGBuilder took 215.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:40:01,333 INFO L168 Benchmark]: TraceAbstraction took 1658.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:40:01,333 INFO L168 Benchmark]: Witness Printer took 50.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:40:01,335 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 372.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -128.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 215.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1658.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * Witness Printer took 50.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 243 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 482 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 89 SDslu, 64 SDs, 0 SdLazy, 58 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 3754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...