./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/15_dekker.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_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/15_dekker.i -s /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 316c62654735ab7f9412d0ff424f710640d92e79 ................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:38:29,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:38:29,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:38:29,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:38:29,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:38:29,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:38:29,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:38:29,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:38:29,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:38:29,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:38:29,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:38:29,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:38:29,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:38:29,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:38:29,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:38:29,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:38:29,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:38:29,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:38:29,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:38:29,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:38:29,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:38:29,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:38:29,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:38:29,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:38:29,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:38:29,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:38:29,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:38:29,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:38:29,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:38:29,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:38:29,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:38:29,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:38:29,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:38:29,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:38:29,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:38:29,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:38:29,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:38:29,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:38:29,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:38:29,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:38:29,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:38:29,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 16:38:29,246 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:38:29,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:38:29,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:38:29,247 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:38:29,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:38:29,247 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:38:29,247 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:38:29,247 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:38:29,247 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:38:29,247 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:38:29,248 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:38:29,248 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:38:29,248 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:38:29,248 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:38:29,248 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:38:29,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:38:29,249 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:38:29,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:38:29,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:38:29,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:38:29,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:38:29,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:38:29,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:38:29,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:38:29,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:38:29,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:38:29,251 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_207992d6-a404-404d-94e9-292107090e40/bin/utaipan 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 -> Taipan 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 -> 316c62654735ab7f9412d0ff424f710640d92e79 [2019-12-07 16:38:29,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:38:29,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:38:29,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:38:29,360 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:38:29,361 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:38:29,361 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/../../sv-benchmarks/c/pthread-ext/15_dekker.i [2019-12-07 16:38:29,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/data/32baa3610/58aa4bedb07c495799bd1bf575245153/FLAG187f28eb9 [2019-12-07 16:38:29,841 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:38:29,841 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/sv-benchmarks/c/pthread-ext/15_dekker.i [2019-12-07 16:38:29,851 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/data/32baa3610/58aa4bedb07c495799bd1bf575245153/FLAG187f28eb9 [2019-12-07 16:38:29,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/data/32baa3610/58aa4bedb07c495799bd1bf575245153 [2019-12-07 16:38:29,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:38:29,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:38:29,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:38:29,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:38:29,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:38:29,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:38:29" (1/1) ... [2019-12-07 16:38:29,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c77c204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:29, skipping insertion in model container [2019-12-07 16:38:29,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:38:29" (1/1) ... [2019-12-07 16:38:29,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:38:29,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:38:30,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:38:30,130 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:38:30,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:38:30,209 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:38:30,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30 WrapperNode [2019-12-07 16:38:30,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:38:30,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:38:30,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:38:30,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:38:30,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:38:30,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:38:30,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:38:30,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:38:30,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... [2019-12-07 16:38:30,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:38:30,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:38:30,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:38:30,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:38:30,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/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 16:38:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-07 16:38:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-07 16:38:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 16:38:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:38:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:38:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:38:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:38:30,309 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 16:38:30,472 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:38:30,473 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 16:38:30,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:38:30 BoogieIcfgContainer [2019-12-07 16:38:30,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:38:30,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:38:30,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:38:30,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:38:30,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:38:29" (1/3) ... [2019-12-07 16:38:30,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2781e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:38:30, skipping insertion in model container [2019-12-07 16:38:30,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:30" (2/3) ... [2019-12-07 16:38:30,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2781e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:38:30, skipping insertion in model container [2019-12-07 16:38:30,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:38:30" (3/3) ... [2019-12-07 16:38:30,478 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2019-12-07 16:38:30,484 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 16:38:30,484 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:38:30,488 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 16:38:30,488 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 16:38:30,503 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:38:30,504 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:38:30,504 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:38:30,504 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:38:30,504 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:38:30,505 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:38:30,515 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 16:38:30,527 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:38:30,528 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:38:30,528 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:38:30,528 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:38:30,528 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:38:30,528 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:38:30,528 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:38:30,528 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:38:30,536 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions [2019-12-07 16:38:30,537 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-12-07 16:38:30,562 INFO L134 PetriNetUnfolder]: 12/64 cut-off events. [2019-12-07 16:38:30,562 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 16:38:30,565 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs. 3/53 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-12-07 16:38:30,568 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-12-07 16:38:30,578 INFO L134 PetriNetUnfolder]: 12/64 cut-off events. [2019-12-07 16:38:30,578 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 16:38:30,579 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs. 3/53 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-12-07 16:38:30,580 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1302 [2019-12-07 16:38:30,581 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 16:38:31,077 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2789 [2019-12-07 16:38:31,077 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2019-12-07 16:38:31,079 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 34 transitions [2019-12-07 16:38:31,090 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 134 states. [2019-12-07 16:38:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2019-12-07 16:38:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 16:38:31,095 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:31,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 16:38:31,096 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:38:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 264070407, now seen corresponding path program 1 times [2019-12-07 16:38:31,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:31,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508887005] [2019-12-07 16:38:31,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:31,195 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 16:38:31,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508887005] [2019-12-07 16:38:31,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:31,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:38:31,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110983726] [2019-12-07 16:38:31,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 16:38:31,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:31,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 16:38:31,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 16:38:31,210 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 2 states. [2019-12-07 16:38:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:31,224 INFO L93 Difference]: Finished difference Result 134 states and 312 transitions. [2019-12-07 16:38:31,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 16:38:31,225 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-12-07 16:38:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:31,234 INFO L225 Difference]: With dead ends: 134 [2019-12-07 16:38:31,234 INFO L226 Difference]: Without dead ends: 122 [2019-12-07 16:38:31,235 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 [2019-12-07 16:38:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-12-07 16:38:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-12-07 16:38:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-12-07 16:38:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 288 transitions. [2019-12-07 16:38:31,268 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 288 transitions. Word has length 5 [2019-12-07 16:38:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:31,268 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 288 transitions. [2019-12-07 16:38:31,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 16:38:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 288 transitions. [2019-12-07 16:38:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:38:31,269 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:31,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:38:31,270 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:38:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash -403790346, now seen corresponding path program 1 times [2019-12-07 16:38:31,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:31,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308920330] [2019-12-07 16:38:31,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:31,306 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 16:38:31,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308920330] [2019-12-07 16:38:31,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:31,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:38:31,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984604376] [2019-12-07 16:38:31,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:38:31,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:31,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:38:31,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:31,308 INFO L87 Difference]: Start difference. First operand 122 states and 288 transitions. Second operand 3 states. [2019-12-07 16:38:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:31,329 INFO L93 Difference]: Finished difference Result 128 states and 286 transitions. [2019-12-07 16:38:31,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:38:31,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 16:38:31,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:31,331 INFO L225 Difference]: With dead ends: 128 [2019-12-07 16:38:31,331 INFO L226 Difference]: Without dead ends: 100 [2019-12-07 16:38:31,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:38:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-12-07 16:38:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2019-12-07 16:38:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-07 16:38:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 216 transitions. [2019-12-07 16:38:31,341 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 216 transitions. Word has length 6 [2019-12-07 16:38:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:31,341 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 216 transitions. [2019-12-07 16:38:31,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:38:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 216 transitions. [2019-12-07 16:38:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:38:31,342 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:31,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:38:31,342 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:38:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash -404462025, now seen corresponding path program 1 times [2019-12-07 16:38:31,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:31,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327564335] [2019-12-07 16:38:31,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:31,371 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 16:38:31,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327564335] [2019-12-07 16:38:31,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:31,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:38:31,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380235482] [2019-12-07 16:38:31,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:38:31,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:31,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:38:31,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:31,373 INFO L87 Difference]: Start difference. First operand 94 states and 216 transitions. Second operand 3 states. [2019-12-07 16:38:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:31,385 INFO L93 Difference]: Finished difference Result 89 states and 198 transitions. [2019-12-07 16:38:31,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:38:31,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 16:38:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:31,386 INFO L225 Difference]: With dead ends: 89 [2019-12-07 16:38:31,386 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 16:38:31,387 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:38:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 16:38:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-12-07 16:38:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 16:38:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 151 transitions. [2019-12-07 16:38:31,392 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 151 transitions. Word has length 6 [2019-12-07 16:38:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:31,392 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 151 transitions. [2019-12-07 16:38:31,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:38:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 151 transitions. [2019-12-07 16:38:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:38:31,393 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:31,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:38:31,393 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:38:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash -2065038419, now seen corresponding path program 1 times [2019-12-07 16:38:31,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:31,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800820633] [2019-12-07 16:38:31,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:31,416 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 16:38:31,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800820633] [2019-12-07 16:38:31,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:31,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:38:31,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386303240] [2019-12-07 16:38:31,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:38:31,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:31,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:38:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:31,418 INFO L87 Difference]: Start difference. First operand 68 states and 151 transitions. Second operand 3 states. [2019-12-07 16:38:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:31,429 INFO L93 Difference]: Finished difference Result 68 states and 146 transitions. [2019-12-07 16:38:31,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:38:31,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 16:38:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:31,430 INFO L225 Difference]: With dead ends: 68 [2019-12-07 16:38:31,430 INFO L226 Difference]: Without dead ends: 58 [2019-12-07 16:38:31,431 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:38:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-07 16:38:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-12-07 16:38:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 16:38:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 122 transitions. [2019-12-07 16:38:31,435 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 122 transitions. Word has length 9 [2019-12-07 16:38:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:31,435 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 122 transitions. [2019-12-07 16:38:31,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:38:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 122 transitions. [2019-12-07 16:38:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:38:31,436 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:31,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:38:31,436 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:38:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:31,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1895831409, now seen corresponding path program 2 times [2019-12-07 16:38:31,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:31,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762883469] [2019-12-07 16:38:31,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:31,457 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 16:38:31,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762883469] [2019-12-07 16:38:31,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:31,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:38:31,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455394190] [2019-12-07 16:38:31,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:38:31,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:31,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:38:31,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:31,459 INFO L87 Difference]: Start difference. First operand 58 states and 122 transitions. Second operand 3 states. [2019-12-07 16:38:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:31,468 INFO L93 Difference]: Finished difference Result 37 states and 93 transitions. [2019-12-07 16:38:31,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:38:31,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 16:38:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:31,468 INFO L225 Difference]: With dead ends: 37 [2019-12-07 16:38:31,468 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:38:31,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:38:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:38:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:38:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:38:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:38:31,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-12-07 16:38:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:31,470 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:38:31,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:38:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:38:31,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:38:31,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:38:31 BasicIcfg [2019-12-07 16:38:31,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:38:31,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:38:31,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:38:31,475 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:38:31,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:38:30" (3/4) ... [2019-12-07 16:38:31,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:38:31,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-12-07 16:38:31,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 16:38:31,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 16:38:31,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 16:38:31,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_207992d6-a404-404d-94e9-292107090e40/bin/utaipan/witness.graphml [2019-12-07 16:38:31,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:38:31,529 INFO L168 Benchmark]: Toolchain (without parser) took 1666.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 940.9 MB in the beginning and 865.4 MB in the end (delta: 75.4 MB). Peak memory consumption was 159.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:31,529 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:38:31,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -116.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:31,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:31,531 INFO L168 Benchmark]: Boogie Preprocessor took 21.85 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 16:38:31,531 INFO L168 Benchmark]: RCFGBuilder took 209.41 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: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:31,531 INFO L168 Benchmark]: TraceAbstraction took 999.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 870.8 MB in the end (delta: 157.8 MB). Peak memory consumption was 157.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:31,532 INFO L168 Benchmark]: Witness Printer took 53.03 ms. Allocated memory is still 1.1 GB. Free memory was 870.8 MB in the beginning and 865.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:31,534 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -116.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.85 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 209.41 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: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 999.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 870.8 MB in the end (delta: 157.8 MB). Peak memory consumption was 157.8 MB. Max. memory is 11.5 GB. * Witness Printer took 53.03 ms. Allocated memory is still 1.1 GB. Free memory was 870.8 MB in the beginning and 865.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 57 ProgramPointsBefore, 26 ProgramPointsAfterwards, 65 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 649 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 26 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2789 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 2 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 67 SDslu, 49 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...