./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/01_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/01_inc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/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 4d91aa845889f03c833da32b972f2eb6326d7db9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/01_inc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/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 4d91aa845889f03c833da32b972f2eb6326d7db9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:44:46,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:44:46,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:44:46,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:44:46,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:44:46,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:44:46,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:44:46,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:44:46,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:44:46,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:44:46,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:44:46,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:44:46,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:44:46,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:44:46,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:44:46,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:44:46,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:44:46,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:44:46,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:44:46,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:44:46,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:44:46,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:44:46,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:44:46,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:44:46,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:44:46,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:44:46,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:44:46,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:44:46,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:44:46,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:44:46,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:44:46,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:44:46,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:44:46,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:44:46,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:44:46,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:44:46,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:44:46,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:44:46,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:44:46,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:44:46,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:44:46,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:44:46,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:44:46,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:44:46,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:44:46,275 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:44:46,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:44:46,275 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:44:46,275 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:44:46,276 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:44:46,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:44:46,276 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:44:46,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:44:46,276 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:44:46,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:44:46,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:44:46,277 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:44:46,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:44:46,278 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:44:46,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:44:46,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:44:46,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:44:46,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:44:46,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:44:46,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:44:46,279 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:44:46,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:44:46,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:44:46,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:44:46,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:44:46,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:44:46,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:44:46,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:44:46,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:44:46,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:44:46,291 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:44:46,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:44:46,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:44:46,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:44:46,291 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_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/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 -> 4d91aa845889f03c833da32b972f2eb6326d7db9 [2019-11-26 02:44:46,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:44:46,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:44:46,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:44:46,471 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:44:46,472 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:44:46,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/../../sv-benchmarks/c/pthread-ext/01_inc.i [2019-11-26 02:44:46,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/496174775/d06dc2db40ea48d98d2472aa3e744827/FLAGe480b6be7 [2019-11-26 02:44:46,933 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:44:46,934 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/sv-benchmarks/c/pthread-ext/01_inc.i [2019-11-26 02:44:46,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/496174775/d06dc2db40ea48d98d2472aa3e744827/FLAGe480b6be7 [2019-11-26 02:44:47,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/496174775/d06dc2db40ea48d98d2472aa3e744827 [2019-11-26 02:44:47,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:44:47,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:44:47,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:47,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:44:47,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:44:47,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b30ace4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47, skipping insertion in model container [2019-11-26 02:44:47,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:44:47,318 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:44:47,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:47,716 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:44:47,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:47,853 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:44:47,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47 WrapperNode [2019-11-26 02:44:47,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:47,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:47,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:44:47,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:44:47,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:47,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:44:47,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:44:47,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:44:47,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... [2019-11-26 02:44:47,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:44:47,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:44:47,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:44:47,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:44:47,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/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 [2019-11-26 02:44:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-26 02:44:48,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-26 02:44:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:44:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:44:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:44:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:44:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:44:48,044 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:44:48,236 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-26 02:44:48,237 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-26 02:44:48,238 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2019-11-26 02:44:48,368 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:44:48,368 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:44:48,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:48 BoogieIcfgContainer [2019-11-26 02:44:48,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:44:48,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:44:48,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:44:48,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:44:48,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:44:47" (1/3) ... [2019-11-26 02:44:48,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c278fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:48, skipping insertion in model container [2019-11-26 02:44:48,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:47" (2/3) ... [2019-11-26 02:44:48,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c278fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:48, skipping insertion in model container [2019-11-26 02:44:48,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:48" (3/3) ... [2019-11-26 02:44:48,376 INFO L109 eAbstractionObserver]: Analyzing ICFG 01_inc.i [2019-11-26 02:44:48,411 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,412 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,412 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,412 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,412 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,413 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,413 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,413 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,413 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,414 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,414 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,414 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,414 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,415 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,415 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,415 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,415 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,415 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,416 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,416 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,416 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,416 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,416 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,417 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,417 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,417 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,418 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,418 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,418 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,418 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,418 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,419 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,419 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,419 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,419 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,420 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,420 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,420 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,420 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:48,432 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:44:48,432 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:44:48,439 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:44:48,449 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:44:48,466 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:44:48,467 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:44:48,467 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:44:48,467 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:44:48,467 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:44:48,467 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:44:48,467 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:44:48,467 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:44:48,477 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 59 transitions [2019-11-26 02:44:50,186 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16972 states. [2019-11-26 02:44:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states. [2019-11-26 02:44:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:44:50,195 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:50,196 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:50,196 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:50,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1891034393, now seen corresponding path program 1 times [2019-11-26 02:44:50,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:50,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594355988] [2019-11-26 02:44:50,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:50,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594355988] [2019-11-26 02:44:50,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:50,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:44:50,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304176851] [2019-11-26 02:44:50,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:44:50,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:44:50,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:44:50,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:44:50,576 INFO L87 Difference]: Start difference. First operand 16972 states. Second operand 5 states. [2019-11-26 02:44:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:51,031 INFO L93 Difference]: Finished difference Result 11807 states and 41550 transitions. [2019-11-26 02:44:51,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:44:51,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-26 02:44:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:51,149 INFO L225 Difference]: With dead ends: 11807 [2019-11-26 02:44:51,150 INFO L226 Difference]: Without dead ends: 11071 [2019-11-26 02:44:51,151 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:44:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11071 states. [2019-11-26 02:44:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11071 to 7327. [2019-11-26 02:44:51,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7327 states. [2019-11-26 02:44:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 26060 transitions. [2019-11-26 02:44:51,675 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 26060 transitions. Word has length 18 [2019-11-26 02:44:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:51,676 INFO L462 AbstractCegarLoop]: Abstraction has 7327 states and 26060 transitions. [2019-11-26 02:44:51,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:44:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 26060 transitions. [2019-11-26 02:44:51,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:44:51,682 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:51,685 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:51,686 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:51,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:51,686 INFO L82 PathProgramCache]: Analyzing trace with hash 542422570, now seen corresponding path program 1 times [2019-11-26 02:44:51,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:51,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642749694] [2019-11-26 02:44:51,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:44:51,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642749694] [2019-11-26 02:44:51,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:51,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:44:51,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329511759] [2019-11-26 02:44:51,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:44:51,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:44:51,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:44:51,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:44:51,878 INFO L87 Difference]: Start difference. First operand 7327 states and 26060 transitions. Second operand 5 states. [2019-11-26 02:44:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:52,132 INFO L93 Difference]: Finished difference Result 11859 states and 41013 transitions. [2019-11-26 02:44:52,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:44:52,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-26 02:44:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:52,193 INFO L225 Difference]: With dead ends: 11859 [2019-11-26 02:44:52,193 INFO L226 Difference]: Without dead ends: 11735 [2019-11-26 02:44:52,194 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:44:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11735 states. [2019-11-26 02:44:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11735 to 7739. [2019-11-26 02:44:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7739 states. [2019-11-26 02:44:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 27305 transitions. [2019-11-26 02:44:52,710 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 27305 transitions. Word has length 22 [2019-11-26 02:44:52,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:52,711 INFO L462 AbstractCegarLoop]: Abstraction has 7739 states and 27305 transitions. [2019-11-26 02:44:52,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:44:52,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 27305 transitions. [2019-11-26 02:44:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:44:52,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:52,719 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:52,720 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:52,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1973406573, now seen corresponding path program 1 times [2019-11-26 02:44:52,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:52,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4790637] [2019-11-26 02:44:52,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:44:52,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4790637] [2019-11-26 02:44:52,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:52,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:44:52,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864872801] [2019-11-26 02:44:52,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:44:52,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:44:52,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:44:52,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:44:52,889 INFO L87 Difference]: Start difference. First operand 7739 states and 27305 transitions. Second operand 5 states. [2019-11-26 02:44:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:53,117 INFO L93 Difference]: Finished difference Result 12275 states and 42363 transitions. [2019-11-26 02:44:53,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:44:53,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-26 02:44:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:53,161 INFO L225 Difference]: With dead ends: 12275 [2019-11-26 02:44:53,161 INFO L226 Difference]: Without dead ends: 12151 [2019-11-26 02:44:53,162 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:44:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2019-11-26 02:44:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 8119. [2019-11-26 02:44:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8119 states. [2019-11-26 02:44:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8119 states to 8119 states and 28382 transitions. [2019-11-26 02:44:53,453 INFO L78 Accepts]: Start accepts. Automaton has 8119 states and 28382 transitions. Word has length 26 [2019-11-26 02:44:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:53,454 INFO L462 AbstractCegarLoop]: Abstraction has 8119 states and 28382 transitions. [2019-11-26 02:44:53,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:44:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8119 states and 28382 transitions. [2019-11-26 02:44:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:44:53,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:53,457 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:53,457 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1672813373, now seen corresponding path program 1 times [2019-11-26 02:44:53,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:53,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122342797] [2019-11-26 02:44:53,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:53,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122342797] [2019-11-26 02:44:53,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5568681] [2019-11-26 02:44:53,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:44:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:53,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:44:53,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:53,865 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:54,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793325516] [2019-11-26 02:44:54,138 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: UnsupportedOperationException [2019-11-26 02:44:54,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:44:54,343 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:269) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1556) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:44:54,347 INFO L168 Benchmark]: Toolchain (without parser) took 7078.35 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 225.4 MB). Free memory was 939.3 MB in the beginning and 842.3 MB in the end (delta: 97.1 MB). Peak memory consumption was 322.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:54,361 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:44:54,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:54,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:54,362 INFO L168 Benchmark]: Boogie Preprocessor took 48.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:44:54,363 INFO L168 Benchmark]: RCFGBuilder took 405.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:54,363 INFO L168 Benchmark]: TraceAbstraction took 5974.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 842.3 MB in the end (delta: 245.4 MB). Peak memory consumption was 327.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:54,366 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 584.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 405.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5974.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 842.3 MB in the end (delta: 245.4 MB). Peak memory consumption was 327.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:44:56,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:44:56,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:44:56,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:44:56,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:44:56,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:44:56,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:44:56,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:44:56,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:44:56,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:44:56,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:44:56,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:44:56,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:44:56,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:44:56,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:44:56,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:44:56,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:44:56,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:44:56,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:44:56,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:44:56,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:44:56,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:44:56,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:44:56,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:44:56,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:44:56,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:44:56,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:44:56,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:44:56,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:44:56,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:44:56,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:44:56,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:44:56,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:44:56,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:44:56,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:44:56,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:44:56,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:44:56,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:44:56,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:44:56,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:44:56,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:44:56,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:44:56,297 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:44:56,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:44:56,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:44:56,298 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:44:56,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:44:56,299 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:44:56,299 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:44:56,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:44:56,299 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:44:56,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:44:56,301 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:44:56,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:44:56,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:44:56,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:44:56,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:44:56,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:44:56,303 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:44:56,303 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:44:56,304 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:44:56,304 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:44:56,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:44:56,304 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:44:56,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:44:56,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:44:56,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:44:56,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:44:56,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:44:56,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:44:56,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:44:56,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:44:56,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:44:56,307 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:44:56,307 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:44:56,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:44:56,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:44:56,308 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/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 -> 4d91aa845889f03c833da32b972f2eb6326d7db9 [2019-11-26 02:44:56,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:44:56,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:44:56,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:44:56,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:44:56,608 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:44:56,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/../../sv-benchmarks/c/pthread-ext/01_inc.i [2019-11-26 02:44:56,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/ba904b82e/dc733d8ab87f44b99dcc900335562481/FLAG75b630f47 [2019-11-26 02:44:57,171 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:44:57,172 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/sv-benchmarks/c/pthread-ext/01_inc.i [2019-11-26 02:44:57,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/ba904b82e/dc733d8ab87f44b99dcc900335562481/FLAG75b630f47 [2019-11-26 02:44:57,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/data/ba904b82e/dc733d8ab87f44b99dcc900335562481 [2019-11-26 02:44:57,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:44:57,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:44:57,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:57,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:44:57,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:44:57,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434b2824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57, skipping insertion in model container [2019-11-26 02:44:57,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:44:57,592 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:44:57,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:57,969 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:44:58,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:58,120 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:44:58,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58 WrapperNode [2019-11-26 02:44:58,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:58,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:58,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:44:58,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:44:58,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:58,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:44:58,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:44:58,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:44:58,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... [2019-11-26 02:44:58,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:44:58,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:44:58,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:44:58,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:44:58,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/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 [2019-11-26 02:44:58,280 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-26 02:44:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-26 02:44:58,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:44:58,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:44:58,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:44:58,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:44:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:44:58,283 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:44:58,447 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-26 02:44:58,448 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-26 02:44:58,448 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2019-11-26 02:44:58,582 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:44:58,582 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:44:58,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:58 BoogieIcfgContainer [2019-11-26 02:44:58,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:44:58,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:44:58,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:44:58,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:44:58,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:44:57" (1/3) ... [2019-11-26 02:44:58,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428061b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:58, skipping insertion in model container [2019-11-26 02:44:58,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:58" (2/3) ... [2019-11-26 02:44:58,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428061b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:58, skipping insertion in model container [2019-11-26 02:44:58,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:58" (3/3) ... [2019-11-26 02:44:58,589 INFO L109 eAbstractionObserver]: Analyzing ICFG 01_inc.i [2019-11-26 02:44:58,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,619 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,620 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,621 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,621 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,622 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,622 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,624 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,624 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,624 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,626 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,626 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:44:58,639 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:44:58,639 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:44:58,644 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:44:58,653 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:44:58,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:44:58,668 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:44:58,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:44:58,669 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:44:58,669 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:44:58,669 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:44:58,669 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:44:58,669 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:44:58,679 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 60 transitions [2019-11-26 02:45:00,353 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16973 states. [2019-11-26 02:45:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 16973 states. [2019-11-26 02:45:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:45:00,363 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:00,364 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:00,364 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash -913285237, now seen corresponding path program 1 times [2019-11-26 02:45:00,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:00,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [624449825] [2019-11-26 02:45:00,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:00,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:45:00,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:00,598 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:00,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [624449825] [2019-11-26 02:45:00,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:00,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:45:00,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451389551] [2019-11-26 02:45:00,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:45:00,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:00,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:45:00,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:45:00,754 INFO L87 Difference]: Start difference. First operand 16973 states. Second operand 8 states. [2019-11-26 02:45:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:02,117 INFO L93 Difference]: Finished difference Result 17292 states and 59891 transitions. [2019-11-26 02:45:02,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-26 02:45:02,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-26 02:45:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:02,302 INFO L225 Difference]: With dead ends: 17292 [2019-11-26 02:45:02,305 INFO L226 Difference]: Without dead ends: 15888 [2019-11-26 02:45:02,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:45:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15888 states. [2019-11-26 02:45:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15888 to 8900. [2019-11-26 02:45:02,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8900 states. [2019-11-26 02:45:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8900 states to 8900 states and 31312 transitions. [2019-11-26 02:45:03,213 INFO L78 Accepts]: Start accepts. Automaton has 8900 states and 31312 transitions. Word has length 19 [2019-11-26 02:45:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:03,221 INFO L462 AbstractCegarLoop]: Abstraction has 8900 states and 31312 transitions. [2019-11-26 02:45:03,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:45:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 8900 states and 31312 transitions. [2019-11-26 02:45:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:45:03,230 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:03,230 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:03,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:03,444 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:03,444 INFO L82 PathProgramCache]: Analyzing trace with hash 769599229, now seen corresponding path program 1 times [2019-11-26 02:45:03,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:03,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1423690717] [2019-11-26 02:45:03,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:03,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:45:03,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:03,593 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:03,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1423690717] [2019-11-26 02:45:03,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:03,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:45:03,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158291529] [2019-11-26 02:45:03,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:45:03,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:03,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:45:03,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:45:03,715 INFO L87 Difference]: Start difference. First operand 8900 states and 31312 transitions. Second operand 8 states. [2019-11-26 02:45:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:04,904 INFO L93 Difference]: Finished difference Result 18172 states and 60918 transitions. [2019-11-26 02:45:04,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-26 02:45:04,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-11-26 02:45:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:04,969 INFO L225 Difference]: With dead ends: 18172 [2019-11-26 02:45:04,969 INFO L226 Difference]: Without dead ends: 17540 [2019-11-26 02:45:04,971 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:45:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17540 states. [2019-11-26 02:45:05,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17540 to 10044. [2019-11-26 02:45:05,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10044 states. [2019-11-26 02:45:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10044 states to 10044 states and 34375 transitions. [2019-11-26 02:45:05,404 INFO L78 Accepts]: Start accepts. Automaton has 10044 states and 34375 transitions. Word has length 23 [2019-11-26 02:45:05,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:05,406 INFO L462 AbstractCegarLoop]: Abstraction has 10044 states and 34375 transitions. [2019-11-26 02:45:05,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:45:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 10044 states and 34375 transitions. [2019-11-26 02:45:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:45:05,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:05,416 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:05,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:05,619 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 75989831, now seen corresponding path program 1 times [2019-11-26 02:45:05,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:05,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1085483722] [2019-11-26 02:45:05,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:05,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:45:05,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:45:05,754 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:45:05,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1085483722] [2019-11-26 02:45:05,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:05,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:45:05,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925101800] [2019-11-26 02:45:05,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:45:05,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:45:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:45:05,855 INFO L87 Difference]: Start difference. First operand 10044 states and 34375 transitions. Second operand 8 states. [2019-11-26 02:45:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:06,710 INFO L93 Difference]: Finished difference Result 18900 states and 60737 transitions. [2019-11-26 02:45:06,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-26 02:45:06,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-11-26 02:45:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:06,776 INFO L225 Difference]: With dead ends: 18900 [2019-11-26 02:45:06,776 INFO L226 Difference]: Without dead ends: 18296 [2019-11-26 02:45:06,777 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:45:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18296 states. [2019-11-26 02:45:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18296 to 11060. [2019-11-26 02:45:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11060 states. [2019-11-26 02:45:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11060 states to 11060 states and 36328 transitions. [2019-11-26 02:45:07,373 INFO L78 Accepts]: Start accepts. Automaton has 11060 states and 36328 transitions. Word has length 27 [2019-11-26 02:45:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:07,375 INFO L462 AbstractCegarLoop]: Abstraction has 11060 states and 36328 transitions. [2019-11-26 02:45:07,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:45:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 11060 states and 36328 transitions. [2019-11-26 02:45:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:45:07,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:07,378 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:07,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:07,580 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:07,580 INFO L82 PathProgramCache]: Analyzing trace with hash -4816974, now seen corresponding path program 1 times [2019-11-26 02:45:07,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:07,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1900329496] [2019-11-26 02:45:07,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:07,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:07,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:07,753 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:07,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1900329496] [2019-11-26 02:45:07,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14264602] [2019-11-26 02:45:07,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:45:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:07,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:07,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:07,984 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:07,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:45:07,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 12 [2019-11-26 02:45:07,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638897719] [2019-11-26 02:45:07,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:45:07,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:07,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:45:07,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:45:07,991 INFO L87 Difference]: Start difference. First operand 11060 states and 36328 transitions. Second operand 12 states. [2019-11-26 02:45:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:09,939 INFO L93 Difference]: Finished difference Result 25400 states and 78755 transitions. [2019-11-26 02:45:09,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-26 02:45:09,940 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2019-11-26 02:45:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:09,993 INFO L225 Difference]: With dead ends: 25400 [2019-11-26 02:45:09,993 INFO L226 Difference]: Without dead ends: 24716 [2019-11-26 02:45:09,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-11-26 02:45:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24716 states. [2019-11-26 02:45:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24716 to 10440. [2019-11-26 02:45:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10440 states. [2019-11-26 02:45:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 34215 transitions. [2019-11-26 02:45:10,606 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 34215 transitions. Word has length 28 [2019-11-26 02:45:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:10,607 INFO L462 AbstractCegarLoop]: Abstraction has 10440 states and 34215 transitions. [2019-11-26 02:45:10,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:45:10,607 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 34215 transitions. [2019-11-26 02:45:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:45:10,610 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:10,610 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:11,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:45:11,013 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:11,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:11,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1191663626, now seen corresponding path program 1 times [2019-11-26 02:45:11,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:11,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [402496162] [2019-11-26 02:45:11,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:11,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:45:11,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:11,082 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:11,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [402496162] [2019-11-26 02:45:11,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:11,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:45:11,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402903103] [2019-11-26 02:45:11,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:45:11,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:11,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:45:11,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:45:11,092 INFO L87 Difference]: Start difference. First operand 10440 states and 34215 transitions. Second operand 4 states. [2019-11-26 02:45:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:11,125 INFO L93 Difference]: Finished difference Result 3376 states and 9432 transitions. [2019-11-26 02:45:11,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:45:11,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-11-26 02:45:11,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:11,131 INFO L225 Difference]: With dead ends: 3376 [2019-11-26 02:45:11,131 INFO L226 Difference]: Without dead ends: 3304 [2019-11-26 02:45:11,131 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:45:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2019-11-26 02:45:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 3304. [2019-11-26 02:45:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3304 states. [2019-11-26 02:45:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 9198 transitions. [2019-11-26 02:45:11,198 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 9198 transitions. Word has length 28 [2019-11-26 02:45:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:11,199 INFO L462 AbstractCegarLoop]: Abstraction has 3304 states and 9198 transitions. [2019-11-26 02:45:11,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:45:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 9198 transitions. [2019-11-26 02:45:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:45:11,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:11,201 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:11,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:11,403 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:11,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1027722414, now seen corresponding path program 2 times [2019-11-26 02:45:11,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:11,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [177787371] [2019-11-26 02:45:11,404 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:11,490 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-26 02:45:11,490 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:45:11,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:11,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:11,535 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:11,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [177787371] [2019-11-26 02:45:11,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:11,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-26 02:45:11,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443632878] [2019-11-26 02:45:11,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:45:11,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:11,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:45:11,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:45:11,661 INFO L87 Difference]: Start difference. First operand 3304 states and 9198 transitions. Second operand 12 states. [2019-11-26 02:45:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:13,045 INFO L93 Difference]: Finished difference Result 4032 states and 11080 transitions. [2019-11-26 02:45:13,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-26 02:45:13,046 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2019-11-26 02:45:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:13,050 INFO L225 Difference]: With dead ends: 4032 [2019-11-26 02:45:13,050 INFO L226 Difference]: Without dead ends: 3672 [2019-11-26 02:45:13,051 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=714, Unknown=0, NotChecked=0, Total=992 [2019-11-26 02:45:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2019-11-26 02:45:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2796. [2019-11-26 02:45:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2796 states. [2019-11-26 02:45:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 7691 transitions. [2019-11-26 02:45:13,097 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 7691 transitions. Word has length 28 [2019-11-26 02:45:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:13,098 INFO L462 AbstractCegarLoop]: Abstraction has 2796 states and 7691 transitions. [2019-11-26 02:45:13,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:45:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 7691 transitions. [2019-11-26 02:45:13,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:45:13,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:13,101 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:13,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:13,304 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:13,305 INFO L82 PathProgramCache]: Analyzing trace with hash 198159548, now seen corresponding path program 1 times [2019-11-26 02:45:13,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:13,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1061817305] [2019-11-26 02:45:13,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:13,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:13,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:13,424 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:13,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061817305] [2019-11-26 02:45:13,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518035587] [2019-11-26 02:45:13,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:45:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:13,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:13,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:13,621 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:45:13,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:45:13,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 12 [2019-11-26 02:45:13,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882082544] [2019-11-26 02:45:13,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:45:13,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:13,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:45:13,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:45:13,628 INFO L87 Difference]: Start difference. First operand 2796 states and 7691 transitions. Second operand 12 states. [2019-11-26 02:45:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:14,926 INFO L93 Difference]: Finished difference Result 3260 states and 8852 transitions. [2019-11-26 02:45:14,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-26 02:45:14,927 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-11-26 02:45:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:14,930 INFO L225 Difference]: With dead ends: 3260 [2019-11-26 02:45:14,930 INFO L226 Difference]: Without dead ends: 2864 [2019-11-26 02:45:14,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2019-11-26 02:45:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2019-11-26 02:45:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 2160. [2019-11-26 02:45:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2019-11-26 02:45:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 5831 transitions. [2019-11-26 02:45:14,974 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 5831 transitions. Word has length 32 [2019-11-26 02:45:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:14,974 INFO L462 AbstractCegarLoop]: Abstraction has 2160 states and 5831 transitions. [2019-11-26 02:45:14,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:45:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 5831 transitions. [2019-11-26 02:45:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:45:14,977 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:14,977 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:15,380 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:45:15,381 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:15,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1553984028, now seen corresponding path program 1 times [2019-11-26 02:45:15,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:15,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1116782787] [2019-11-26 02:45:15,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:15,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:15,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:45:15,510 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:45:15,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1116782787] [2019-11-26 02:45:15,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:15,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-26 02:45:15,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867934198] [2019-11-26 02:45:15,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:45:15,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:15,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:45:15,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:45:15,659 INFO L87 Difference]: Start difference. First operand 2160 states and 5831 transitions. Second operand 12 states. [2019-11-26 02:45:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:17,006 INFO L93 Difference]: Finished difference Result 2468 states and 6622 transitions. [2019-11-26 02:45:17,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-26 02:45:17,007 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-11-26 02:45:17,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:17,009 INFO L225 Difference]: With dead ends: 2468 [2019-11-26 02:45:17,010 INFO L226 Difference]: Without dead ends: 2076 [2019-11-26 02:45:17,010 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2019-11-26 02:45:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2019-11-26 02:45:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1724. [2019-11-26 02:45:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1724 states. [2019-11-26 02:45:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 4570 transitions. [2019-11-26 02:45:17,045 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 4570 transitions. Word has length 32 [2019-11-26 02:45:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:17,046 INFO L462 AbstractCegarLoop]: Abstraction has 1724 states and 4570 transitions. [2019-11-26 02:45:17,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:45:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 4570 transitions. [2019-11-26 02:45:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:45:17,047 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:17,048 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:17,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:17,249 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1901037823, now seen corresponding path program 1 times [2019-11-26 02:45:17,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:17,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [549607940] [2019-11-26 02:45:17,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:17,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:17,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:45:17,416 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:45:17,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549607940] [2019-11-26 02:45:17,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290000849] [2019-11-26 02:45:17,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:45:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:17,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:17,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:45:17,657 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:45:17,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:45:17,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 12 [2019-11-26 02:45:17,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424588336] [2019-11-26 02:45:17,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:45:17,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:17,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:45:17,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:45:17,665 INFO L87 Difference]: Start difference. First operand 1724 states and 4570 transitions. Second operand 12 states. [2019-11-26 02:45:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:18,711 INFO L93 Difference]: Finished difference Result 1772 states and 4644 transitions. [2019-11-26 02:45:18,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-26 02:45:18,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-11-26 02:45:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:18,713 INFO L225 Difference]: With dead ends: 1772 [2019-11-26 02:45:18,713 INFO L226 Difference]: Without dead ends: 1108 [2019-11-26 02:45:18,713 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2019-11-26 02:45:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2019-11-26 02:45:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 932. [2019-11-26 02:45:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2019-11-26 02:45:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2445 transitions. [2019-11-26 02:45:18,734 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2445 transitions. Word has length 32 [2019-11-26 02:45:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:18,735 INFO L462 AbstractCegarLoop]: Abstraction has 932 states and 2445 transitions. [2019-11-26 02:45:18,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:45:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2445 transitions. [2019-11-26 02:45:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:45:18,737 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:18,737 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:19,297 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:45:19,298 INFO L410 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:19,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:19,298 INFO L82 PathProgramCache]: Analyzing trace with hash 98438463, now seen corresponding path program 1 times [2019-11-26 02:45:19,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:19,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [784291509] [2019-11-26 02:45:19,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:19,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:45:19,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:45:19,419 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:45:19,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [784291509] [2019-11-26 02:45:19,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:19,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-26 02:45:19,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352222774] [2019-11-26 02:45:19,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:45:19,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:19,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:45:19,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:45:19,553 INFO L87 Difference]: Start difference. First operand 932 states and 2445 transitions. Second operand 12 states. [2019-11-26 02:45:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:20,251 INFO L93 Difference]: Finished difference Result 780 states and 1987 transitions. [2019-11-26 02:45:20,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-26 02:45:20,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-11-26 02:45:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:20,252 INFO L225 Difference]: With dead ends: 780 [2019-11-26 02:45:20,252 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:45:20,253 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2019-11-26 02:45:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:45:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:45:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:45:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:45:20,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-11-26 02:45:20,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:20,253 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:45:20,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:45:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:45:20,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:45:20,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:45:20,456 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:45:20,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:45:20 BasicIcfg [2019-11-26 02:45:20,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:45:20,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:45:20,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:45:20,458 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:45:20,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:58" (3/4) ... [2019-11-26 02:45:20,462 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:45:20,467 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-26 02:45:20,470 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 02:45:20,470 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:45:20,470 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:45:20,500 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d26a7be2-1bf9-4a5c-96e0-f6277b9b84e6/bin/utaipan/witness.graphml [2019-11-26 02:45:20,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:45:20,506 INFO L168 Benchmark]: Toolchain (without parser) took 22973.56 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 655.9 MB). Free memory was 957.8 MB in the beginning and 1.4 GB in the end (delta: -410.8 MB). Peak memory consumption was 245.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:20,506 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:20,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -126.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:20,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.04 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:20,508 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 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. [2019-11-26 02:45:20,508 INFO L168 Benchmark]: RCFGBuilder took 357.81 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:20,508 INFO L168 Benchmark]: TraceAbstraction took 21873.75 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 540.5 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -308.8 MB). Peak memory consumption was 231.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:20,509 INFO L168 Benchmark]: Witness Printer took 42.75 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-26 02:45:20,511 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 589.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -126.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.04 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.92 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 357.81 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21873.75 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 540.5 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -308.8 MB). Peak memory consumption was 231.7 MB. Max. memory is 11.5 GB. * Witness Printer took 42.75 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 66 locations, 4 error locations. Result: SAFE, OverallTime: 21.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 996 SDtfs, 2880 SDslu, 4570 SDs, 0 SdLazy, 2759 SolverSat, 366 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 845 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16973occurred 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: 2.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 38104 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 373 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 720 ConstructedInterpolants, 0 QuantifiedInterpolants, 81787 SizeOfPredicates, 54 NumberOfNonLiveVariables, 648 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 26 InterpolantComputations, 14 PerfectInterpolantSequences, 106/170 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...